From 3d7eaf63f2211a9e1a8defe8c29e8f6da889ab2e Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Mon, 22 Jul 2024 14:01:39 +0200
Subject: [PATCH 1/3] Rector: CQ - UnusedForeachValueToArrayKeysRector (#1)

* Rector: CQ - UnusedForeachValueToArrayKeysRector

See Rector\CodeQuality\Rector\Foreach_\UnusedForeachValueToArrayKeysRector

* fixes + phpstan

See fix at rector: https://github.com/rectorphp/rector-src/pull/6164
---
 app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php    | 4 ++--
 app/code/core/Mage/Adminhtml/Block/Page/Menu.php          | 2 +-
 app/code/core/Mage/Adminhtml/Block/Report/Grid.php        | 2 +-
 .../Adminhtml/Block/Sales/Transactions/Child/Grid.php     | 2 +-
 app/code/core/Mage/Adminhtml/Block/Store/Switcher.php     | 4 ++--
 app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php    | 2 +-
 .../core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php    | 2 +-
 app/code/core/Mage/Adminhtml/Block/Widget/Grid.php        | 2 +-
 .../Block/Widget/Grid/Column/Renderer/Action.php          | 2 +-
 app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php        | 2 +-
 .../Adminhtml/Model/System/Config/Source/Admin/Page.php   | 2 +-
 app/code/core/Mage/Api2/Model/Acl/Filter.php              | 2 +-
 .../Model/Acl/Filter/Attribute/ResourcePermission.php     | 2 +-
 app/code/core/Mage/Catalog/Model/Api2/Product.php         | 2 +-
 app/code/core/Mage/Catalog/Model/Category.php             | 2 +-
 app/code/core/Mage/Catalog/Model/Product/Type/Price.php   | 2 +-
 .../core/Mage/Catalog/Model/Resource/Category/Flat.php    | 2 +-
 app/code/core/Mage/Checkout/Model/Type/Onepage.php        | 2 +-
 .../Mage/ConfigurableSwatches/Helper/Mediafallback.php    | 2 +-
 app/code/core/Mage/Core/Helper/Data.php                   | 2 +-
 app/code/core/Mage/Core/Model/Cache.php                   | 2 +-
 app/code/core/Mage/Core/Model/Layout/Validator.php        | 2 +-
 app/code/core/Mage/Core/Model/Locale.php                  | 2 +-
 app/code/core/Mage/Core/Model/Log/Adapter.php             | 2 +-
 app/code/core/Mage/Core/Model/Url/Rewrite.php             | 2 +-
 app/code/core/Mage/Core/Model/Url/Rewrite/Request.php     | 2 +-
 app/code/core/Mage/Customer/Model/Address/Api.php         | 8 ++++----
 app/code/core/Mage/Customer/Model/Address/Api/V2.php      | 6 +++---
 app/code/core/Mage/Customer/Model/Customer/Api.php        | 6 +++---
 app/code/core/Mage/Dataflow/Model/Batch.php               | 4 ++--
 app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php  | 2 +-
 app/code/core/Mage/Eav/Model/Entity/Abstract.php          | 2 +-
 .../Mage/ImportExport/Model/Export/Entity/Product.php     | 6 +++---
 .../Mage/ImportExport/Model/Import/Entity/Customer.php    | 2 +-
 .../Mage/ImportExport/Model/Import/Entity/Product.php     | 2 +-
 app/code/core/Mage/Index/Model/Event.php                  | 2 +-
 app/code/core/Mage/Install/Block/Db/Main.php              | 2 +-
 app/code/core/Mage/Install/Model/Installer/Console.php    | 2 +-
 .../core/Mage/Install/Model/Installer/Db/Abstract.php     | 2 +-
 app/code/core/Mage/Page/Block/Template/Links.php          | 2 +-
 app/code/core/Mage/Paygate/Model/Authorizenet.php         | 2 +-
 app/code/core/Mage/Payment/Block/Form/Cc.php              | 2 +-
 app/code/core/Mage/Payment/Helper/Data.php                | 6 +++---
 .../core/Mage/Paypal/Model/Resource/Report/Settlement.php | 2 +-
 app/code/core/Mage/Reports/Model/Totals.php               | 2 +-
 app/code/core/Mage/Rule/Model/Action/Abstract.php         | 4 ++--
 app/code/core/Mage/Rule/Model/Condition/Abstract.php      | 6 +++---
 app/code/core/Mage/Rule/Model/Condition/Combine.php       | 2 +-
 .../Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php | 2 +-
 .../Mage/Sales/Model/Resource/Report/Order/Createdat.php  | 2 +-
 .../core/Mage/Sales/Model/Resource/Sale/Collection.php    | 2 +-
 .../sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php      | 2 +-
 .../sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php      | 2 +-
 app/code/core/Mage/Shipping/Model/Rate/Result.php         | 2 +-
 app/code/core/Mage/Tag/Helper/Data.php                    | 2 +-
 app/code/core/Mage/Tag/controllers/IndexController.php    | 2 +-
 .../core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php   | 2 +-
 .../Catalog/Product/Attribute/Edit/AttributeForm.php      | 2 +-
 .../Test/Block/Catalog/Product/Edit/Tab/Prices.php        | 4 ++--
 .../Adminhtml/Test/Block/Catalog/Product/ProductForm.php  | 2 +-
 .../app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php     | 4 ++--
 .../tests/app/Mage/Bundle/Test/Handler/Curl.php           | 4 ++--
 .../DeleteOptionsSubStep.php                              | 2 +-
 .../app/Mage/Customer/Test/Handler/Customer/Curl.php      | 2 +-
 .../app/Mage/Weee/Test/Constraint/AssertFptApplied.php    | 2 +-
 lib/Varien/Convert/Parser/Csv.php                         | 4 ++--
 lib/Varien/Db/Statement/Pdo/Mysql.php                     | 2 +-
 lib/Varien/Http/Adapter/Curl.php                          | 2 +-
 lib/Varien/Object.php                                     | 2 +-
 lib/Varien/Object/Cache.php                               | 2 +-
 phpstan.dist.baseline.neon                                | 5 -----
 71 files changed, 91 insertions(+), 96 deletions(-)

diff --git a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
index 700d3b3b17d..afc5f13938c 100644
--- a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
+++ b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
@@ -215,7 +215,7 @@ public function getChartUrl($directUrl = true)
                     $dateStart->addMonth(1);
                     break;
             }
-            foreach ($this->getAllSeries() as $index => $serie) {
+            foreach (array_keys($this->getAllSeries()) as $index) {
                 if (in_array($d, $this->_axisLabels['x'])) {
                     $datas[$index][] = (float)array_shift($this->_allSeries[$index]);
                 } else {
@@ -328,7 +328,7 @@ public function getChartUrl($directUrl = true)
         if (count($this->_axisLabels)) {
             $params['chxt'] = implode(',', array_keys($this->_axisLabels));
             $indexid = 0;
-            foreach ($this->_axisLabels as $idx => $labels) {
+            foreach (array_keys($this->_axisLabels) as $idx) {
                 if ($idx === 'x') {
                     /**
                      * Format date
diff --git a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
index d4872f9158d..20bb44f96f4 100644
--- a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
+++ b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
@@ -164,7 +164,7 @@ protected function _buildMenuArray(Varien_Simplexml_Element $parent, $path = '',
 
         uasort($parentArr, [$this, '_sortMenu']);
 
-        foreach ($parentArr as $key => $value) {
+        foreach (array_keys($parentArr) as $key) {
             $last = $key;
         }
         if (isset($last)) {
diff --git a/app/code/core/Mage/Adminhtml/Block/Report/Grid.php b/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
index 180a228a288..efc441c2365 100644
--- a/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
@@ -207,7 +207,7 @@ protected function _prepareCollection()
      */
     protected function _setFilterValues($data)
     {
-        foreach ($data as $name => $value) {
+        foreach (array_keys($data) as $name) {
             $this->setFilter($name, $data[$name]);
         }
         return $this;
diff --git a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
index 1e8e12f3dd4..2a585eb5b7d 100644
--- a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
@@ -62,7 +62,7 @@ protected function _prepareColumns()
     {
         $result = parent::_prepareColumns();
 
-        foreach ($this->_columns as $key => $value) {
+        foreach (array_keys($this->_columns) as $key) {
             if (in_array($key, $this->_columnsToRemove)) {
                 unset($this->_columns[$key]);
             } else {
diff --git a/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php b/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
index d0c60a17406..33442aa26b1 100644
--- a/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
+++ b/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
@@ -73,7 +73,7 @@ public function getWebsites()
     {
         $websites = Mage::app()->getWebsites();
         if ($websiteIds = $this->getWebsiteIds()) {
-            foreach ($websites as $websiteId => $website) {
+            foreach (array_keys($websites) as $websiteId) {
                 if (!in_array($websiteId, $websiteIds)) {
                     unset($websites[$websiteId]);
                 }
@@ -140,7 +140,7 @@ public function getStores($group)
         }
         $stores = $group->getStores();
         if ($storeIds = $this->getStoreIds()) {
-            foreach ($stores as $storeId => $store) {
+            foreach (array_keys($stores) as $storeId) {
                 if (!in_array($storeId, $storeIds)) {
                     unset($stores[$storeId]);
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
index 9e369a45972..fc959e184ff 100644
--- a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
+++ b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
@@ -194,7 +194,7 @@ public function getButtonsHtml($area = null)
     {
         if ($this->_buttonsHtml === null) {
             $this->_buttonsHtml = parent::getButtonsHtml();
-            foreach ($this->_children as $alias => $child) {
+            foreach (array_keys($this->_children) as $alias) {
                 if (str_contains($alias, '_button')) {
                     $this->unsetChild($alias);
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
index a91f22b905a..955c2f871b0 100644
--- a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
+++ b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
@@ -61,7 +61,7 @@ protected function _prepareForm()
             'description'  => $model->getDescription(),
         ];
         if ($sessionData = Mage::getSingleton('adminhtml/session')->getData('urlrewrite_data', true)) {
-            foreach ($formValues as $key => $value) {
+            foreach (array_keys($formValues) as $key) {
                 if (isset($sessionData[$key])) {
                     $formValues[$key] = $sessionData[$key];
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php b/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
index af36a237924..5b701ae5133 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
@@ -481,7 +481,7 @@ public function getColumns()
      */
     protected function _setFilterValues($data)
     {
-        foreach ($data as $columnId => $value) {
+        foreach (array_keys($data) as $columnId) {
             $column = $this->getColumn($columnId);
             if ($column instanceof Mage_Adminhtml_Block_Widget_Grid_Column
                 && (!empty($data[$columnId]) || strlen($data[$columnId]) > 0)
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php b/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
index 1fe5f9905b6..9bdad27dbbf 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
@@ -109,7 +109,7 @@ protected function _toLinkHtml($action, Varien_Object $row)
      */
     protected function _transformActionData(&$action, &$actionCaption, Varien_Object $row)
     {
-        foreach ($action as $attribute => $value) {
+        foreach (array_keys($action) as $attribute) {
             if (isset($action[$attribute]) && !is_array($action[$attribute])) {
                 $this->getColumn()->setFormat($action[$attribute]);
                 $action[$attribute] = parent::render($row);
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php b/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
index 94e9fae48a6..ca58c8f7fc6 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
@@ -256,7 +256,7 @@ protected function _reorderTabs()
         asort($this->_tabPositions);
 
         $ordered = [];
-        foreach ($this->_tabPositions as $tabId => $position) {
+        foreach (array_keys($this->_tabPositions) as $tabId) {
             if (isset($this->_tabs[$tabId])) {
                 $tab = $this->_tabs[$tabId];
                 $ordered[$tabId] = $tab;
diff --git a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
index e79b3daedc4..92bfd9d0639 100644
--- a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
+++ b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
@@ -109,7 +109,7 @@ protected function _buildMenuArray(?Varien_Simplexml_Element $parent = null, $pa
 
         uasort($parentArr, [$this, '_sortMenu']);
 
-        foreach ($parentArr as $key => $value) {
+        foreach (array_keys($parentArr) as $key) {
             $last = $key;
         }
         if (isset($last)) {
diff --git a/app/code/core/Mage/Api2/Model/Acl/Filter.php b/app/code/core/Mage/Api2/Model/Acl/Filter.php
index 3494dfceb14..cefef4dd4f6 100644
--- a/app/code/core/Mage/Api2/Model/Acl/Filter.php
+++ b/app/code/core/Mage/Api2/Model/Acl/Filter.php
@@ -61,7 +61,7 @@ public function __construct(Mage_Api2_Model_Resource $resource)
      */
     protected function _filter(array $allowedAttributes, array $data)
     {
-        foreach ($data as $attribute => $value) {
+        foreach (array_keys($data) as $attribute) {
             if (!in_array($attribute, $allowedAttributes)) {
                 unset($data[$attribute]);
             }
diff --git a/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php b/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
index 1016b87c227..f58a244ca00 100644
--- a/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
+++ b/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
@@ -103,7 +103,7 @@ public function getResourcesPermissions()
                             $resourceModel->setResourceType($resource)
                                 ->setUserType($this->_userType);
 
-                            foreach ($operations as $operation => $operationLabel) {
+                            foreach (array_keys($operations) as $operation) {
                                 if (!$this->_hasEntityOnlyAttributes
                                     && $config->getResourceEntityOnlyAttributes($resource, $this->_userType, $operation)
                                 ) {
diff --git a/app/code/core/Mage/Catalog/Model/Api2/Product.php b/app/code/core/Mage/Catalog/Model/Api2/Product.php
index 586f1db4acd..f757413be4b 100644
--- a/app/code/core/Mage/Catalog/Model/Api2/Product.php
+++ b/app/code/core/Mage/Catalog/Model/Api2/Product.php
@@ -42,7 +42,7 @@ public function getAvailableAttributes($userType, $operation)
         }
         $excludedAttrs = $this->getExcludedAttributes($userType, $operation);
         $includedAttrs = $this->getIncludedAttributes($userType, $operation);
-        foreach ($attributes as $code => $label) {
+        foreach (array_keys($attributes) as $code) {
             if (in_array($code, $excludedAttrs) || ($includedAttrs && !in_array($code, $includedAttrs))) {
                 unset($attributes[$code]);
             }
diff --git a/app/code/core/Mage/Catalog/Model/Category.php b/app/code/core/Mage/Catalog/Model/Category.php
index 58cd0b2c7c9..5ff10b609dc 100644
--- a/app/code/core/Mage/Catalog/Model/Category.php
+++ b/app/code/core/Mage/Catalog/Model/Category.php
@@ -346,7 +346,7 @@ public function getAttributes($noDesignAttributes = false)
             ->getSortedAttributes();
 
         if ($noDesignAttributes) {
-            foreach ($result as $k => $a) {
+            foreach (array_keys($result) as $k) {
                 if (in_array($k, $this->_designAttributes)) {
                     unset($result[$k]);
                 }
diff --git a/app/code/core/Mage/Catalog/Model/Product/Type/Price.php b/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
index 62e6d7f86ae..df7d7f731c9 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
@@ -300,7 +300,7 @@ public function getFormatedTierPrice($qty, $product)
     {
         $price = $product->getTierPrice($qty);
         if (is_array($price)) {
-            foreach ($price as $index => $value) {
+            foreach (array_keys($price) as $index) {
                 $price[$index]['formated_price'] = Mage::app()->getStore()->convertPrice(
                     $price[$index]['website_price'],
                     true
diff --git a/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php b/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
index 3a03e409ef5..7e962fb0b72 100644
--- a/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
+++ b/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
@@ -1152,7 +1152,7 @@ protected function _prepareDataForAllFields($category, $replaceFields = [])
         $table = $this->_getReadAdapter()->describeTable($table);
         $data = [];
         $idFieldName = Mage::getSingleton('catalog/category')->getIdFieldName();
-        foreach ($table as $column => $columnData) {
+        foreach (array_keys($table) as $column) {
             if ($column != $idFieldName || $category->getData($column) !== null) {
                 if (array_key_exists($column, $replaceFields)) {
                     $value = $category->getData($replaceFields[$column]);
diff --git a/app/code/core/Mage/Checkout/Model/Type/Onepage.php b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
index f1d8d4a5ced..2cdbe2eec65 100644
--- a/app/code/core/Mage/Checkout/Model/Type/Onepage.php
+++ b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
@@ -119,7 +119,7 @@ public function initCheckout()
         $checkout = $this->getCheckout();
         $customerSession = $this->getCustomerSession();
         if (is_array($checkout->getStepData())) {
-            foreach ($checkout->getStepData() as $step => $data) {
+            foreach (array_keys($checkout->getStepData()) as $step) {
                 if (!($step === 'login' || $customerSession->isLoggedIn() && $step === 'billing')) {
                     $checkout->setStepData($step, 'allow', false);
                 }
diff --git a/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php b/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
index db49ed16933..da23ea014ad 100644
--- a/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
+++ b/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
@@ -136,7 +136,7 @@ public function attachProductChildrenAttributeMapping(array $parentProducts, $st
                 } // end looping child products
             } // end looping attributes
 
-            foreach ($mapping as $key => $value) {
+            foreach (array_keys($mapping) as $key) {
                 $mapping[$key]['product_ids'] = array_unique($mapping[$key]['product_ids']);
             }
 
diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index 73029d7952c..d3c9a73ac45 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -603,7 +603,7 @@ public function assocToXml(array $array, $rootName = '_')
 <$rootName></$rootName>
 XML;
         $xml = new SimpleXMLElement($xmlstr);
-        foreach ($array as $key => $value) {
+        foreach (array_keys($array) as $key) {
             if (is_numeric($key)) {
                 throw new Exception('Array root keys must not be numeric.');
             }
diff --git a/app/code/core/Mage/Core/Model/Cache.php b/app/code/core/Mage/Core/Model/Cache.php
index fe97c2c491f..9965019bf1e 100644
--- a/app/code/core/Mage/Core/Model/Cache.php
+++ b/app/code/core/Mage/Core/Model/Cache.php
@@ -625,7 +625,7 @@ public function getInvalidatedTypes()
         $types = $this->_getInvalidatedTypes();
         if ($types) {
             $allTypes = $this->getTypes();
-            foreach ($types as $type => $flag) {
+            foreach (array_keys($types) as $type) {
                 if (isset($allTypes[$type]) && $this->canUse($type)) {
                     $invalidatedTypes[$type] = $allTypes[$type];
                 }
diff --git a/app/code/core/Mage/Core/Model/Layout/Validator.php b/app/code/core/Mage/Core/Model/Layout/Validator.php
index 9bedeaf8621..2d14731992b 100644
--- a/app/code/core/Mage/Core/Model/Layout/Validator.php
+++ b/app/code/core/Mage/Core/Model/Layout/Validator.php
@@ -108,7 +108,7 @@ public function getDisallowedBlocks()
         if (!count($this->_disallowedBlock)) {
             $disallowedBlockConfig = $this->_getDisallowedBlockConfigValue();
             if (is_array($disallowedBlockConfig)) {
-                foreach ($disallowedBlockConfig as $blockName => $value) {
+                foreach (array_keys($disallowedBlockConfig) as $blockName) {
                     $this->_disallowedBlock[] = $blockName;
                 }
             }
diff --git a/app/code/core/Mage/Core/Model/Locale.php b/app/code/core/Mage/Core/Model/Locale.php
index d3b70a7c1cd..2a0c44563c3 100644
--- a/app/code/core/Mage/Core/Model/Locale.php
+++ b/app/code/core/Mage/Core/Model/Locale.php
@@ -247,7 +247,7 @@ protected function _getOptionLocales($translatedName = false)
             }
         }
 
-        foreach ($locales as $code => $active) {
+        foreach (array_keys($locales) as $code) {
             if (strstr($code, '_')) {
                 if (!in_array($code, $allowed)) {
                     continue;
diff --git a/app/code/core/Mage/Core/Model/Log/Adapter.php b/app/code/core/Mage/Core/Model/Log/Adapter.php
index 3bc190114c0..1a173c94d99 100644
--- a/app/code/core/Mage/Core/Model/Log/Adapter.php
+++ b/app/code/core/Mage/Core/Model/Log/Adapter.php
@@ -115,7 +115,7 @@ public function setFilterDataKeys($keys)
     protected function _filterDebugData($debugData)
     {
         if (is_array($debugData) && is_array($this->_debugReplacePrivateDataKeys)) {
-            foreach ($debugData as $key => $value) {
+            foreach (array_keys($debugData) as $key) {
                 if (in_array($key, $this->_debugReplacePrivateDataKeys)) {
                     $debugData[$key] = '****';
                 } else {
diff --git a/app/code/core/Mage/Core/Model/Url/Rewrite.php b/app/code/core/Mage/Core/Model/Url/Rewrite.php
index a9bae5f2912..929f39be12c 100644
--- a/app/code/core/Mage/Core/Model/Url/Rewrite.php
+++ b/app/code/core/Mage/Core/Model/Url/Rewrite.php
@@ -319,7 +319,7 @@ protected function _getQueryString()
             $queryParams = [];
             parse_str($_SERVER['QUERY_STRING'], $queryParams);
             $hasChanges = false;
-            foreach ($queryParams as $key => $value) {
+            foreach (array_keys($queryParams) as $key) {
                 if (substr($key, 0, 3) === '___') {
                     unset($queryParams[$key]);
                     $hasChanges = true;
diff --git a/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php b/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
index 80bf9ce24de..f6c14bf4b9a 100644
--- a/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
+++ b/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
@@ -306,7 +306,7 @@ protected function _getQueryString()
             $queryParams = [];
             parse_str($_SERVER['QUERY_STRING'], $queryParams);
             $hasChanges = false;
-            foreach ($queryParams as $key => $value) {
+            foreach (array_keys($queryParams) as $key) {
                 if (substr($key, 0, 3) === '___') {
                     unset($queryParams[$key]);
                     $hasChanges = true;
diff --git a/app/code/core/Mage/Customer/Model/Address/Api.php b/app/code/core/Mage/Customer/Model/Address/Api.php
index 63120a58f38..9f779558882 100644
--- a/app/code/core/Mage/Customer/Model/Address/Api.php
+++ b/app/code/core/Mage/Customer/Model/Address/Api.php
@@ -55,7 +55,7 @@ public function items($customerId)
                 $row[$attributeAlias] = $data[$attributeCode] ?? null;
             }
 
-            foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+            foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
                 if (isset($data[$attributeCode])) {
                     $row[$attributeCode] = $data[$attributeCode];
                 }
@@ -89,7 +89,7 @@ public function create($customerId, $addressData)
 
         $address = Mage::getModel('customer/address');
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             if (isset($addressData[$attributeCode])) {
                 $address->setData($attributeCode, $addressData[$attributeCode]);
             }
@@ -141,7 +141,7 @@ public function info($addressId)
             $result[$attributeAlias] = $address->getData($attributeCode);
         }
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             $result[$attributeCode] = $address->getData($attributeCode);
         }
 
@@ -169,7 +169,7 @@ public function update($addressId, $addressData)
             $this->_fault('not_exists');
         }
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             if (isset($addressData[$attributeCode])) {
                 $address->setData($attributeCode, $addressData[$attributeCode]);
             }
diff --git a/app/code/core/Mage/Customer/Model/Address/Api/V2.php b/app/code/core/Mage/Customer/Model/Address/Api/V2.php
index 8616fec57a1..901b932eef7 100644
--- a/app/code/core/Mage/Customer/Model/Address/Api/V2.php
+++ b/app/code/core/Mage/Customer/Model/Address/Api/V2.php
@@ -40,7 +40,7 @@ public function create($customerId, $addressData)
 
         $address = Mage::getModel('customer/address');
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             if (isset($addressData->$attributeCode)) {
                 $address->setData($attributeCode, $addressData->$attributeCode);
             }
@@ -92,7 +92,7 @@ public function info($addressId)
             $result[$attributeAlias] = $address->getData($attributeCode);
         }
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             $result[$attributeCode] = $address->getData($attributeCode);
         }
 
@@ -120,7 +120,7 @@ public function update($addressId, $addressData)
             $this->_fault('not_exists');
         }
 
-        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
             if (isset($addressData->$attributeCode)) {
                 $address->setData($attributeCode, $addressData->$attributeCode);
             }
diff --git a/app/code/core/Mage/Customer/Model/Customer/Api.php b/app/code/core/Mage/Customer/Model/Customer/Api.php
index 16853c6c60e..f8daaa27a89 100644
--- a/app/code/core/Mage/Customer/Model/Customer/Api.php
+++ b/app/code/core/Mage/Customer/Model/Customer/Api.php
@@ -87,7 +87,7 @@ public function info($customerId, $attributes = null)
             $result[$attributeAlias] = $customer->getData($attributeCode);
         }
 
-        foreach ($this->getAllowedAttributes($customer, $attributes) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($customer, $attributes)) as $attributeCode) {
             $result[$attributeCode] = $customer->getData($attributeCode);
         }
 
@@ -121,7 +121,7 @@ public function items($filters)
             foreach ($this->_mapAttributes as $attributeAlias => $attributeCode) {
                 $row[$attributeAlias] = $data[$attributeCode] ?? null;
             }
-            foreach ($this->getAllowedAttributes($customer) as $attributeCode => $attribute) {
+            foreach (array_keys($this->getAllowedAttributes($customer)) as $attributeCode) {
                 if (isset($data[$attributeCode])) {
                     $row[$attributeCode] = $data[$attributeCode];
                 }
@@ -149,7 +149,7 @@ public function update($customerId, $customerData)
             $this->_fault('not_exists');
         }
 
-        foreach ($this->getAllowedAttributes($customer) as $attributeCode => $attribute) {
+        foreach (array_keys($this->getAllowedAttributes($customer)) as $attributeCode) {
             if (isset($customerData[$attributeCode])) {
                 $customer->setData($attributeCode, $customerData[$attributeCode]);
             }
diff --git a/app/code/core/Mage/Dataflow/Model/Batch.php b/app/code/core/Mage/Dataflow/Model/Batch.php
index 1f727062e73..1235b8f468f 100644
--- a/app/code/core/Mage/Dataflow/Model/Batch.php
+++ b/app/code/core/Mage/Dataflow/Model/Batch.php
@@ -92,12 +92,12 @@ public function getFieldList()
      */
     public function parseFieldList($row)
     {
-        foreach ($row as $fieldName => $value) {
+        foreach (array_keys($row) as $fieldName) {
             if (!in_array($fieldName, $this->_fieldList)) {
                 $this->_fieldList[$fieldName] = $fieldName;
             }
         }
-        unset($fieldName, $value, $row);
+        unset($fieldName, $row);
     }
 
     /**
diff --git a/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php b/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
index 1a15c400f15..fdf30b8c5f6 100644
--- a/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
+++ b/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
@@ -47,7 +47,7 @@ public function parse()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach ($line as $j => $f) {
+                    foreach (array_keys($line) as $j) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
diff --git a/app/code/core/Mage/Eav/Model/Entity/Abstract.php b/app/code/core/Mage/Eav/Model/Entity/Abstract.php
index 25c93a56c2e..01c39e4c918 100644
--- a/app/code/core/Mage/Eav/Model/Entity/Abstract.php
+++ b/app/code/core/Mage/Eav/Model/Entity/Abstract.php
@@ -1594,7 +1594,7 @@ public function delete($object)
             ];
             $this->_getWriteAdapter()->delete($this->getEntityTable(), $where);
             $this->loadAllAttributes($object);
-            foreach ($this->getAttributesByTable() as $table => $attributes) {
+            foreach (array_keys($this->getAttributesByTable()) as $table) {
                 $this->_getWriteAdapter()->delete($table, $where);
             }
         } catch (Exception $e) {
diff --git a/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
index 91b578e810a..1ecb2e87b92 100644
--- a/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
@@ -790,7 +790,7 @@ protected function _prepareExport()
                 '_custom_option_row_sku', '_custom_option_row_sort'
             ];
 
-            foreach ($this->_storeIdToCode as $storeId => &$storeCode) {
+            foreach (array_keys($this->_storeIdToCode) as &$storeId) {
                 $skip = false;
                 $options = Mage::getResourceModel('catalog/product_option_collection')
                     ->reset()
@@ -961,7 +961,7 @@ protected function _prepareExport()
                         $dataRow = array_merge($dataRow, array_shift($configurableData[$productId]));
                     }
                     if (!empty($rowMultiselects[$productId][$storeId])) {
-                        foreach ($rowMultiselects[$productId][$storeId] as $attrKey => $attrVal) {
+                        foreach (array_keys($rowMultiselects[$productId][$storeId]) as $attrKey) {
                             if (isset($rowMultiselects[$productId][$storeId][$attrKey])) {
                                 $dataRow[$attrKey] = array_shift($rowMultiselects[$productId][$storeId][$attrKey]);
                             }
@@ -1039,7 +1039,7 @@ protected function _prepareExport()
                                 $dataRow = array_merge($dataRow, array_shift($configurableData[$productId]));
                             }
                             if (!empty($rowMultiselects[$productId][$storeId])) {
-                                foreach ($rowMultiselects[$productId][$storeId] as $attrKey => $attrVal) {
+                                foreach (array_keys($rowMultiselects[$productId][$storeId]) as $attrKey) {
                                     if (isset($rowMultiselects[$productId][$storeId][$attrKey])) {
                                         $dataRow[$attrKey] = array_shift($rowMultiselects[$productId][$storeId][$attrKey]);
                                     }
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
index 6c1771b734e..5fc9083546d 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
@@ -547,7 +547,7 @@ public function getEntityTypeCode()
     public function getRowScope(array $rowData)
     {
         $foundOptions = false;
-        foreach ($this->_multiSelectAttributes as $attrCode => $attribute) {
+        foreach (array_keys($this->_multiSelectAttributes) as $attrCode) {
             if ($rowData[$attrCode]) {
                 $foundOptions = true;
             }
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
index 0a4cf80d21e..914c5be124f 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
@@ -1099,7 +1099,7 @@ protected function _saveCustomOptions()
             if ($productIds) { // update product entity table to show that product has options
                 $customOptionsProducts = $customOptions['product_id'];
 
-                foreach ($customOptionsProducts as $key => $value) {
+                foreach (array_keys($customOptionsProducts) as $key) {
                     if (!in_array($key, $productIds)) {
                         unset($customOptionsProducts[$key]);
                     }
diff --git a/app/code/core/Mage/Index/Model/Event.php b/app/code/core/Mage/Index/Model/Event.php
index 2035a5be359..d4dc4468a17 100644
--- a/app/code/core/Mage/Index/Model/Event.php
+++ b/app/code/core/Mage/Index/Model/Event.php
@@ -157,7 +157,7 @@ protected function _mergeNewDataRecursive($previous, $current)
             return $previous;
         }
 
-        foreach ($previous as $key => $value) {
+        foreach (array_keys($previous) as $key) {
             if (array_key_exists($key, $current) && !is_null($current[$key]) && is_array($previous[$key])) {
                 if (!is_string($key) || is_array($current[$key])) {
                     $current[$key] = $this->_mergeNewDataRecursive($previous[$key], $current[$key]);
diff --git a/app/code/core/Mage/Install/Block/Db/Main.php b/app/code/core/Mage/Install/Block/Db/Main.php
index 9f0789c1ea3..25791d2f5f8 100644
--- a/app/code/core/Mage/Install/Block/Db/Main.php
+++ b/app/code/core/Mage/Install/Block/Db/Main.php
@@ -77,7 +77,7 @@ public function getDatabaseBlock($type)
     public function getDatabaseBlocks()
     {
         $databases = [];
-        foreach ($this->_databases as $type => $blockData) {
+        foreach (array_keys($this->_databases) as $type) {
             $databases[] = $this->getDatabaseBlock($type);
         }
         return $databases;
diff --git a/app/code/core/Mage/Install/Model/Installer/Console.php b/app/code/core/Mage/Install/Model/Installer/Console.php
index 033d8db36a4..7c31a5007ab 100644
--- a/app/code/core/Mage/Install/Model/Installer/Console.php
+++ b/app/code/core/Mage/Install/Model/Installer/Console.php
@@ -155,7 +155,7 @@ public function setArgs($args = null)
         /**
          * Set args values
          */
-        foreach ($this->_getOptions() as $name => $option) {
+        foreach (array_keys($this->_getOptions()) as $name) {
             $this->_args[$name] = $args[$name] ?? '';
         }
 
diff --git a/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php b/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
index 40155d07e4a..33b6de0c2ea 100644
--- a/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
+++ b/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
@@ -136,7 +136,7 @@ public function getRequiredExtensions()
     {
         $extensions = [];
         $configExt = (array)Mage::getConfig()->getNode(sprintf('install/databases/%s/extensions', $this->getModel()));
-        foreach ($configExt as $name => $value) {
+        foreach (array_keys($configExt) as $name) {
             $extensions[] = $name;
         }
         return $extensions;
diff --git a/app/code/core/Mage/Page/Block/Template/Links.php b/app/code/core/Mage/Page/Block/Template/Links.php
index b52e2f367eb..aacfd69b27e 100644
--- a/app/code/core/Mage/Page/Block/Template/Links.php
+++ b/app/code/core/Mage/Page/Block/Template/Links.php
@@ -242,7 +242,7 @@ protected function _getNewPosition($position = 0)
             }
         } else {
             $position = 0;
-            foreach ($this->_links as $k => $v) {
+            foreach (array_keys($this->_links) as $k) {
                 $position = $k;
             }
             $position += 10;
diff --git a/app/code/core/Mage/Paygate/Model/Authorizenet.php b/app/code/core/Mage/Paygate/Model/Authorizenet.php
index 5659e2caac3..c32a8b69385 100644
--- a/app/code/core/Mage/Paygate/Model/Authorizenet.php
+++ b/app/code/core/Mage/Paygate/Model/Authorizenet.php
@@ -1475,7 +1475,7 @@ protected function _addTransaction(
             $payment->setTransactionAdditionalInfo($key, $value);
         }
         $transaction = $payment->addTransaction($transactionType, null, false, $message);
-        foreach ($transactionDetails as $key => $value) {
+        foreach (array_keys($transactionDetails) as $key) {
             $payment->unsetData($key);
         }
         $payment->unsLastTransId();
diff --git a/app/code/core/Mage/Payment/Block/Form/Cc.php b/app/code/core/Mage/Payment/Block/Form/Cc.php
index 5435e7f4a75..08a12b4c037 100644
--- a/app/code/core/Mage/Payment/Block/Form/Cc.php
+++ b/app/code/core/Mage/Payment/Block/Form/Cc.php
@@ -47,7 +47,7 @@ public function getCcAvailableTypes()
             $availableTypes = $method->getConfigData('cctypes');
             if ($availableTypes) {
                 $availableTypes = explode(',', $availableTypes);
-                foreach ($types as $code => $name) {
+                foreach (array_keys($types) as $code) {
                     if (!in_array($code, $availableTypes)) {
                         unset($types[$code]);
                     }
diff --git a/app/code/core/Mage/Payment/Helper/Data.php b/app/code/core/Mage/Payment/Helper/Data.php
index a7f9071c590..fed881ddeae 100644
--- a/app/code/core/Mage/Payment/Helper/Data.php
+++ b/app/code/core/Mage/Payment/Helper/Data.php
@@ -67,7 +67,7 @@ public function getMethodInstance($code)
     public function getStoreMethods($store = null, $quote = null)
     {
         $res = [];
-        foreach ($this->getPaymentMethods($store) as $code => $methodConfig) {
+        foreach (array_keys($this->getPaymentMethods($store)) as $code) {
             $prefix = self::XML_PATH_PAYMENT_METHODS . '/' . $code . '/';
             if (!$model = Mage::getStoreConfig($prefix . 'model', $store)) {
                 continue;
@@ -166,7 +166,7 @@ public function getBillingAgreementMethods($store = null, $quote = null)
     public function getRecurringProfileMethods($store = null)
     {
         $result = [];
-        foreach ($this->getPaymentMethods($store) as $code => $data) {
+        foreach (array_keys($this->getPaymentMethods($store)) as $code) {
             $paymentMethodModelClassName = $this->getMethodModelClassName($code);
             if (!$paymentMethodModelClassName) {
                 continue;
@@ -244,7 +244,7 @@ public function getPaymentMethodList($sorted = true, $asLabelValue = false, $wit
         }
         if ($asLabelValue) {
             $labelValues = [];
-            foreach ($methods as $code => $title) {
+            foreach (array_keys($methods) as $code) {
                 $labelValues[$code] = [];
             }
             foreach ($methods as $code => $title) {
diff --git a/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php b/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
index ec75245e7e2..fca1a3d661e 100644
--- a/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
+++ b/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
@@ -58,7 +58,7 @@ protected function _afterSave(Mage_Core_Model_Abstract $object)
                 /** @var Mage_Core_Model_Date $date */
                 $date = Mage::getSingleton('core/date');
 
-                foreach ($rows as $key => $row) {
+                foreach (array_keys($rows) as $key) {
                     /*
                      * Converting dates
                      */
diff --git a/app/code/core/Mage/Reports/Model/Totals.php b/app/code/core/Mage/Reports/Model/Totals.php
index 33f899cc705..6b98422fdee 100644
--- a/app/code/core/Mage/Reports/Model/Totals.php
+++ b/app/code/core/Mage/Reports/Model/Totals.php
@@ -47,7 +47,7 @@ public function countTotals($grid, $from, $to)
             }
             $data = $item->getData();
 
-            foreach ($columns as $field => $a) {
+            foreach (array_keys($columns) as $field) {
                 if ($field !== '') {
                     $columns[$field]['value'] += $data[$field] ?? 0;
                 }
diff --git a/app/code/core/Mage/Rule/Model/Action/Abstract.php b/app/code/core/Mage/Rule/Model/Action/Abstract.php
index a810922d2f7..d8cb87fb7f4 100644
--- a/app/code/core/Mage/Rule/Model/Action/Abstract.php
+++ b/app/code/core/Mage/Rule/Model/Action/Abstract.php
@@ -52,11 +52,11 @@ public function __construct()
         parent::__construct();
         $this->loadAttributeOptions()->loadOperatorOptions()->loadValueOptions();
 
-        foreach ($this->getAttributeOption() as $attr => $dummy) {
+        foreach (array_keys($this->getAttributeOption()) as $attr) {
             $this->setAttribute($attr);
             break;
         }
-        foreach ($this->getOperatorOption() as $operator => $dummy) {
+        foreach (array_keys($this->getOperatorOption()) as $operator) {
             $this->setOperator($operator);
             break;
         }
diff --git a/app/code/core/Mage/Rule/Model/Condition/Abstract.php b/app/code/core/Mage/Rule/Model/Condition/Abstract.php
index d2e67c86270..e31fbdda29c 100644
--- a/app/code/core/Mage/Rule/Model/Condition/Abstract.php
+++ b/app/code/core/Mage/Rule/Model/Condition/Abstract.php
@@ -92,13 +92,13 @@ public function __construct()
         $this->loadAttributeOptions()->loadOperatorOptions()->loadValueOptions();
 
         if ($options = $this->getAttributeOptions()) {
-            foreach ($options as $attr => $dummy) {
+            foreach (array_keys($options) as $attr) {
                 $this->setAttribute($attr);
                 break;
             }
         }
         if ($options = $this->getOperatorOptions()) {
-            foreach ($options as $operator => $dummy) {
+            foreach (array_keys($options) as $operator) {
                 $this->setOperator($operator);
                 break;
             }
@@ -503,7 +503,7 @@ public function getTypeElementHtml()
     public function getAttributeElement()
     {
         if (is_null($this->getAttribute())) {
-            foreach ($this->getAttributeOption() as $k => $v) {
+            foreach (array_keys($this->getAttributeOption()) as $k) {
                 $this->setAttribute($k);
                 break;
             }
diff --git a/app/code/core/Mage/Rule/Model/Condition/Combine.php b/app/code/core/Mage/Rule/Model/Condition/Combine.php
index 79d4e693c38..1d9b0093d13 100644
--- a/app/code/core/Mage/Rule/Model/Condition/Combine.php
+++ b/app/code/core/Mage/Rule/Model/Condition/Combine.php
@@ -95,7 +95,7 @@ public function __construct()
 
         $this->loadAggregatorOptions();
         if ($options = $this->getAggregatorOptions()) {
-            foreach ($options as $aggregator => $dummy) {
+            foreach (array_keys($options) as $aggregator) {
                 $this->setAggregator($aggregator);
                 break;
             }
diff --git a/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php b/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
index 52bf6a9b347..713bee21bab 100644
--- a/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
+++ b/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
@@ -125,7 +125,7 @@ protected function _prepareColumns()
     {
         $result = parent::_prepareColumns();
 
-        foreach ($this->_columns as $key => $value) {
+        foreach (array_keys($this->_columns) as $key) {
             if (in_array($key, $this->_columnsToRemove)) {
                 unset($this->_columns[$key]);
             }
diff --git a/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php b/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
index 323ce47e00f..a9971351972 100644
--- a/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
+++ b/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
@@ -230,7 +230,7 @@ protected function _aggregateByField($aggregationField, $from, $to)
             $adapter->query($select->insertFromSelect($this->getMainTable(), array_keys($columns)));
 
             // setup all columns to select SUM() except period, store_id and order_status
-            foreach ($columns as $k => $v) {
+            foreach (array_keys($columns) as $k) {
                 $columns[$k] = new Zend_Db_Expr('SUM(' . $k . ')');
             }
             $columns['period']         = 'period';
diff --git a/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php b/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
index 1bf6ed99bf1..f2972e84cc9 100644
--- a/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
+++ b/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
@@ -182,7 +182,7 @@ public function load($printQuery = false, $logQuery = false)
                 ->setWebsiteId(Mage::app()->getStore($storeId)->getWebsiteId())
                 ->setAvgNormalized($v['avgsale'] * $v['num_orders']);
             $this->_items[$storeId] = $storeObject;
-            foreach ($this->_totals as $key => $value) {
+            foreach (array_keys($this->_totals) as $key) {
                 $this->_totals[$key] += $storeObject->getData($key);
             }
         }
diff --git a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
index 43d089aa854..9525a968c57 100644
--- a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
+++ b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
@@ -183,7 +183,7 @@
 $select->from(['e' => $this->getTable('sales_order_entity')]);
 
 $attributeIds = [];
-foreach ($attributes as $code => $params) {
+foreach (array_keys($attributes) as $code) {
     $attributes[$code] = $installer->getAttribute($orderEntityTypeId, $code);
     if ($attributes[$code]['backend_type'] != 'static') {
         $select->joinLeft(
diff --git a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
index 3e9e34ea693..69722481f54 100644
--- a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
+++ b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
@@ -46,7 +46,7 @@
 ");
 
 /* get order_payment attribute codes*/
-foreach ($attributesIds as $attributeCode => $attributeId) {
+foreach (array_keys($attributesIds) as $attributeCode) {
     $attributesIds[$attributeCode] = $connection->fetchOne("
         SELECT attribute_id
         FROM {$this->getTable('eav_attribute')}
diff --git a/app/code/core/Mage/Shipping/Model/Rate/Result.php b/app/code/core/Mage/Shipping/Model/Rate/Result.php
index fa06daacb29..bc7ad148a12 100644
--- a/app/code/core/Mage/Shipping/Model/Rate/Result.php
+++ b/app/code/core/Mage/Shipping/Model/Rate/Result.php
@@ -180,7 +180,7 @@ public function sortRatesByPrice()
 
         natsort($tmp);
 
-        foreach ($tmp as $i => $price) {
+        foreach (array_keys($tmp) as $i) {
             $result[] = $this->_rates[$i];
         }
 
diff --git a/app/code/core/Mage/Tag/Helper/Data.php b/app/code/core/Mage/Tag/Helper/Data.php
index c86d4d5eee1..a2de68080cc 100644
--- a/app/code/core/Mage/Tag/Helper/Data.php
+++ b/app/code/core/Mage/Tag/Helper/Data.php
@@ -73,7 +73,7 @@ public function extractTags($tagNamesInString)
      */
     public function cleanTags(array $tagNamesArr)
     {
-        foreach ($tagNamesArr as $key => $tagName) {
+        foreach (array_keys($tagNamesArr) as $key) {
             $tagNamesArr[$key] = trim($tagNamesArr[$key], '\'');
             $tagNamesArr[$key] = trim($tagNamesArr[$key]);
             if ($tagNamesArr[$key] == '') {
diff --git a/app/code/core/Mage/Tag/controllers/IndexController.php b/app/code/core/Mage/Tag/controllers/IndexController.php
index 54b26c441f7..833837c75b6 100644
--- a/app/code/core/Mage/Tag/controllers/IndexController.php
+++ b/app/code/core/Mage/Tag/controllers/IndexController.php
@@ -99,7 +99,7 @@ protected function _extractTags($tagNamesInString)
      */
     protected function _cleanTags(array $tagNamesArr)
     {
-        foreach ($tagNamesArr as $key => $tagName) {
+        foreach (array_keys($tagNamesArr) as $key) {
             $tagNamesArr[$key] = trim($tagNamesArr[$key], '\'');
             $tagNamesArr[$key] = trim($tagNamesArr[$key]);
             if ($tagNamesArr[$key] == '') {
diff --git a/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php b/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
index ed49099010c..f6ed065e028 100644
--- a/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
+++ b/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
@@ -74,7 +74,7 @@ public function afterLoad($object)
     {
         $data = $this->_getResource()->loadProductData($object, $this->getAttribute());
 
-        foreach ($data as $i => $row) {
+        foreach (array_keys($data) as $i) {
             if ($data[$i]['website_id'] == 0) {
                 $rate = Mage::app()->getStore()->getBaseCurrency()->getRate(Mage::app()->getBaseCurrencyCode());
                 if ($rate) {
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
index 9683e4322cd..1344cfc1a92 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
@@ -45,7 +45,7 @@ public function getData(FixtureInterface $fixture = null, Element $element = nul
     {
         $data = [];
         if ($fixture === null) {
-            foreach ($this->tabs as $tabName => $tab) {
+            foreach (array_keys($this->tabs) as $tabName) {
                 $this->openTab($tabName);
                 $tabData = $this->getTabElement($tabName)->getDataFormTab();
                 $data = array_merge($data, $tabData);
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
index 3346dcc17a8..657f84a8239 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
@@ -54,7 +54,7 @@ class Prices extends Tab
     public function fillFormTab(array $fields, Element $element = null)
     {
         $context = $element ? $element : $this->_rootElement;
-        foreach ($this->childrenForm as $key => $value) {
+        foreach (array_keys($this->childrenForm) as $key) {
             if (isset($fields[$key])) {
                 $this->fillOptionsPrices([$key => $fields[$key]], $context);
                 unset($fields[$key]);
@@ -91,7 +91,7 @@ public function getDataFormTab($fields = null, Element $element = null)
     {
         $result = [];
         $context = $element ? $element : $this->_rootElement;
-        foreach ($this->childrenForm as $key => $value) {
+        foreach (array_keys($this->childrenForm) as $key) {
             if (isset($fields[$key])) {
                 $result[$key] = $this->getOptionsPrices([$key => $fields[$key]], $context);
                 unset($fields[$key]);
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
index 584a8f25fbc..565b823b7c5 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
@@ -341,7 +341,7 @@ public function getRequireNoticeAttributes(FixtureInterface $product)
     {
         $data = [];
         $tabs = $this->getFieldsByTabs($product);
-        foreach ($tabs as $tabName => $fields) {
+        foreach (array_keys($tabs) as $tabName) {
             $tab = $this->getTabElement($tabName);
             $this->openTab($tabName);
             $errors = $tab->getRequireNoticeMessages();
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
index 8d9596cda76..a0c24f0c42d 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
@@ -135,7 +135,7 @@ protected function fillTabs(array $tabs, Element $element = null)
      */
     protected function fillMissedFields()
     {
-        foreach ($this->tabs as $tabName => $tabData) {
+        foreach (array_keys($this->tabs) as $tabName) {
             $tabElement = $this->getTabElement($tabName);
             if ($this->openTab($tabName)) {
                 $mapping = $tabElement->dataMapping($this->unassignedFields);
@@ -174,7 +174,7 @@ public function getData(FixtureInterface $fixture = null, Element $element = nul
         $data = [];
 
         if (null === $fixture) {
-            foreach ($this->tabs as $tabName => $tab) {
+            foreach (array_keys($this->tabs) as $tabName) {
                 $this->openTab($tabName);
                 $tabData = $this->getTabElement($tabName)->getDataFormTab();
                 $data = array_merge($data, $tabData);
diff --git a/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php b/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
index e4777d9f973..eb79bfc90ef 100644
--- a/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
+++ b/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
@@ -146,7 +146,7 @@ protected function prepareBundleSelections(array $bundleData)
      */
     protected function prepareItemSelectionData(array $selections, array $products)
     {
-        foreach ($selections as $key => $selection) {
+        foreach (array_keys($selections) as $key) {
             $selections[$key]['product_id'] = $products[$key]->getId();
             unset($selections[$key]['sku']);
             $selections[$key]['delete'] = '';
@@ -163,7 +163,7 @@ protected function prepareItemSelectionData(array $selections, array $products)
      */
     protected function prepareBundleOptions(array $bundleData)
     {
-        foreach ($bundleData as $key => $option) {
+        foreach (array_keys($bundleData) as $key) {
             $bundleData[$key] = array_intersect_key($bundleData[$key], array_flip($this->optionsFields));
             $bundleData[$key]['delete'] = '';
         }
diff --git a/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php b/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
index 6b18d2b8ea3..16d05ab359c 100644
--- a/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
+++ b/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
@@ -86,7 +86,7 @@ protected function searchKeysForOption($optionIndex)
     {
         $keys = [];
         $originalProductAssignedProducts = $this->getOriginalProductAssignedProducts();
-        foreach ($originalProductAssignedProducts as $key => $product) {
+        foreach (array_keys($originalProductAssignedProducts) as $key) {
             if (strpos($key, 'option_key_' . $optionIndex) !== false) {
                 $keys[] = $key;
             }
diff --git a/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php b/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
index 68f2f85b69a..23d27ff801b 100644
--- a/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
+++ b/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
@@ -131,7 +131,7 @@ public function persist(FixtureInterface $customer = null)
      */
     protected function checkForUpdateData(array $data)
     {
-        foreach ($data as $key => $field) {
+        foreach (array_keys($data) as $key) {
             if (in_array($key, $this->updatingFields)) {
                 return true;
             }
diff --git a/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php b/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
index c1b61df6d23..baf99e0e016 100644
--- a/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
+++ b/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
@@ -145,7 +145,7 @@ protected function clearShoppingCart()
     protected function getPrices()
     {
         $actualPrices = [];
-        foreach ($this->expectedPrices as $priceType => $prices) {
+        foreach (array_keys($this->expectedPrices) as $priceType) {
             $actualPrices[$priceType] = $this->{'get' . ucfirst($priceType) . 'Price'}();
         }
 
diff --git a/lib/Varien/Convert/Parser/Csv.php b/lib/Varien/Convert/Parser/Csv.php
index f857c3b85a8..4550d155691 100644
--- a/lib/Varien/Convert/Parser/Csv.php
+++ b/lib/Varien/Convert/Parser/Csv.php
@@ -44,7 +44,7 @@ public function parse()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach ($line as $j => $f) {
+                    foreach (array_keys($line) as $j) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
@@ -87,7 +87,7 @@ public function parseTest()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach ($line as $j => $f) {
+                    foreach (array_keys($line) as $j) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
diff --git a/lib/Varien/Db/Statement/Pdo/Mysql.php b/lib/Varien/Db/Statement/Pdo/Mysql.php
index b23cb8435fa..d5f83882237 100644
--- a/lib/Varien/Db/Statement/Pdo/Mysql.php
+++ b/lib/Varien/Db/Statement/Pdo/Mysql.php
@@ -33,7 +33,7 @@ public function _executeWithBinding(array $params)
     {
         // Check whether we deal with named bind
         $isPositionalBind = true;
-        foreach ($params as $k => $v) {
+        foreach (array_keys($params) as $k) {
             if (!is_int($k)) {
                 $isPositionalBind = false;
                 break;
diff --git a/lib/Varien/Http/Adapter/Curl.php b/lib/Varien/Http/Adapter/Curl.php
index 56e9359a23f..1e9fd81f16b 100644
--- a/lib/Varien/Http/Adapter/Curl.php
+++ b/lib/Varien/Http/Adapter/Curl.php
@@ -75,7 +75,7 @@ protected function _applyConfig()
         $verifyHost = isset($this->_config['verifyhost']) ? $this->_config['verifyhost'] : 0;
         curl_setopt($this->_getResource(), CURLOPT_SSL_VERIFYHOST, $verifyHost);
 
-        foreach ($this->_config as $param => $curlOption) {
+        foreach (array_keys($this->_config) as $param) {
             if (array_key_exists($param, $this->_allowedParams)) {
                 curl_setopt($this->_getResource(), $this->_allowedParams[$param], $this->_config[$param]);
             }
diff --git a/lib/Varien/Object.php b/lib/Varien/Object.php
index bfd0f11bcff..968d5b0fc02 100644
--- a/lib/Varien/Object.php
+++ b/lib/Varien/Object.php
@@ -292,7 +292,7 @@ public function unsetData($key = null)
     public function unsetOldData($key = null)
     {
         if (is_null($key)) {
-            foreach ($this->_oldFieldsMap as $key => $newFieldName) {
+            foreach (array_keys($this->_oldFieldsMap) as $key) {
                 unset($this->_data[$key]);
             }
         } else {
diff --git a/lib/Varien/Object/Cache.php b/lib/Varien/Object/Cache.php
index 11b6cc23775..24047b87356 100644
--- a/lib/Varien/Object/Cache.php
+++ b/lib/Varien/Object/Cache.php
@@ -241,7 +241,7 @@ public function delete($idx)
         }
 
         if (isset($this->_objectReferences[$idx])) {
-            foreach ($this->_references as $r => $dummy) {
+            foreach (array_keys($this->_references) as $r) {
                 unset($this->_references[$r]);
             }
             unset($this->_objectReferences[$idx]);
diff --git a/phpstan.dist.baseline.neon b/phpstan.dist.baseline.neon
index 8fd0d3944fa..21489364a42 100644
--- a/phpstan.dist.baseline.neon
+++ b/phpstan.dist.baseline.neon
@@ -3400,11 +3400,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
 
-		-
-			message: "#^Offset int\\|string on non\\-empty\\-array\\<int\\|string, non\\-empty\\-array\\> in isset\\(\\) always exists and is not nullable\\.$#"
-			count: 2
-			path: app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
-
 		-
 			message: "#^Variable \\$collection might not be defined\\.$#"
 			count: 1

From 0340c9f17cdb9d8a9da6f4245198d5c49a289c55 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Wed, 21 Aug 2024 03:42:21 +0200
Subject: [PATCH 2/3] Updated phpstan to 1.11.11

---
 composer.lock              | 10 +++++-----
 phpstan.dist.baseline.neon |  5 -----
 phpstan.dist.neon          |  3 ---
 3 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/composer.lock b/composer.lock
index 8fdf520b2b4..2e0dc2c7fcb 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3486,16 +3486,16 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "1.11.7",
+            "version": "1.11.11",
             "source": {
                 "type": "git",
                 "url": "https://github.com/phpstan/phpstan.git",
-                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d"
+                "reference": "707c2aed5d8d0075666e673a5e71440c1d01a5a3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/52d2bbfdcae7f895915629e4694e9497d0f8e28d",
-                "reference": "52d2bbfdcae7f895915629e4694e9497d0f8e28d",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/707c2aed5d8d0075666e673a5e71440c1d01a5a3",
+                "reference": "707c2aed5d8d0075666e673a5e71440c1d01a5a3",
                 "shasum": ""
             },
             "require": {
@@ -3540,7 +3540,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2024-07-06T11:17:41+00:00"
+            "time": "2024-08-19T14:37:29+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
diff --git a/phpstan.dist.baseline.neon b/phpstan.dist.baseline.neon
index 52c437a2709..40723ea0e61 100644
--- a/phpstan.dist.baseline.neon
+++ b/phpstan.dist.baseline.neon
@@ -3560,11 +3560,6 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/Payment/Model/Method/Abstract.php
 
-		-
-			message: "#^Loose comparison using \\!\\= between ''\\|'OT' and 'SS' will always evaluate to true\\.$#"
-			count: 1
-			path: app/code/core/Mage/Payment/Model/Method/Cc.php
-
 		-
 			message: "#^Method Mage_Payment_Model_Recurring_Profile\\:\\:exportStartDatetime\\(\\) should return string\\|Zend_Date but empty return statement found\\.$#"
 			count: 1
diff --git a/phpstan.dist.neon b/phpstan.dist.neon
index d82c837f678..30cc67196a7 100644
--- a/phpstan.dist.neon
+++ b/phpstan.dist.neon
@@ -50,9 +50,6 @@ parameters:
         - app/code/core/Mage/Paypal/Model/Report/Settlement.php
         - lib/Varien/Io/Sftp.php
 
-        # Class backup/db was not found while trying to analyse it
-        - app/code/core/Mage/Adminhtml/controllers/System/BackupController.php
-
         # Dataflow/Model/Convert/Iterator.php
         - app/code/core/Mage/Dataflow/Model/Convert/Iterator.php
 

From 76e773b306511d7946837f8a9f54416460d6a862 Mon Sep 17 00:00:00 2001
From: Sven Reichel <github-sr@hotmail.com>
Date: Wed, 21 Aug 2024 03:42:36 +0200
Subject: [PATCH 3/3] Revert "Rector: CQ - UnusedForeachValueToArrayKeysRector
 (#1)"

This reverts commit 3d7eaf63f2211a9e1a8defe8c29e8f6da889ab2e.
---
 app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php    | 4 ++--
 app/code/core/Mage/Adminhtml/Block/Page/Menu.php          | 2 +-
 app/code/core/Mage/Adminhtml/Block/Report/Grid.php        | 2 +-
 .../Adminhtml/Block/Sales/Transactions/Child/Grid.php     | 2 +-
 app/code/core/Mage/Adminhtml/Block/Store/Switcher.php     | 4 ++--
 app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php    | 2 +-
 .../core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php    | 2 +-
 app/code/core/Mage/Adminhtml/Block/Widget/Grid.php        | 2 +-
 .../Block/Widget/Grid/Column/Renderer/Action.php          | 2 +-
 app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php        | 2 +-
 .../Adminhtml/Model/System/Config/Source/Admin/Page.php   | 2 +-
 app/code/core/Mage/Api2/Model/Acl/Filter.php              | 2 +-
 .../Model/Acl/Filter/Attribute/ResourcePermission.php     | 2 +-
 app/code/core/Mage/Catalog/Model/Api2/Product.php         | 2 +-
 app/code/core/Mage/Catalog/Model/Category.php             | 2 +-
 app/code/core/Mage/Catalog/Model/Product/Type/Price.php   | 2 +-
 .../core/Mage/Catalog/Model/Resource/Category/Flat.php    | 2 +-
 app/code/core/Mage/Checkout/Model/Type/Onepage.php        | 2 +-
 .../Mage/ConfigurableSwatches/Helper/Mediafallback.php    | 2 +-
 app/code/core/Mage/Core/Helper/Data.php                   | 2 +-
 app/code/core/Mage/Core/Model/Cache.php                   | 2 +-
 app/code/core/Mage/Core/Model/Layout/Validator.php        | 2 +-
 app/code/core/Mage/Core/Model/Locale.php                  | 2 +-
 app/code/core/Mage/Core/Model/Log/Adapter.php             | 2 +-
 app/code/core/Mage/Core/Model/Url/Rewrite.php             | 2 +-
 app/code/core/Mage/Core/Model/Url/Rewrite/Request.php     | 2 +-
 app/code/core/Mage/Customer/Model/Address/Api.php         | 8 ++++----
 app/code/core/Mage/Customer/Model/Address/Api/V2.php      | 6 +++---
 app/code/core/Mage/Customer/Model/Customer/Api.php        | 6 +++---
 app/code/core/Mage/Dataflow/Model/Batch.php               | 4 ++--
 app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php  | 2 +-
 app/code/core/Mage/Eav/Model/Entity/Abstract.php          | 2 +-
 .../Mage/ImportExport/Model/Export/Entity/Product.php     | 6 +++---
 .../Mage/ImportExport/Model/Import/Entity/Customer.php    | 2 +-
 .../Mage/ImportExport/Model/Import/Entity/Product.php     | 2 +-
 app/code/core/Mage/Index/Model/Event.php                  | 2 +-
 app/code/core/Mage/Install/Block/Db/Main.php              | 2 +-
 app/code/core/Mage/Install/Model/Installer/Console.php    | 2 +-
 .../core/Mage/Install/Model/Installer/Db/Abstract.php     | 2 +-
 app/code/core/Mage/Page/Block/Template/Links.php          | 2 +-
 app/code/core/Mage/Paygate/Model/Authorizenet.php         | 2 +-
 app/code/core/Mage/Payment/Block/Form/Cc.php              | 2 +-
 app/code/core/Mage/Payment/Helper/Data.php                | 6 +++---
 .../core/Mage/Paypal/Model/Resource/Report/Settlement.php | 2 +-
 app/code/core/Mage/Reports/Model/Totals.php               | 2 +-
 app/code/core/Mage/Rule/Model/Action/Abstract.php         | 4 ++--
 app/code/core/Mage/Rule/Model/Condition/Abstract.php      | 6 +++---
 app/code/core/Mage/Rule/Model/Condition/Combine.php       | 2 +-
 .../Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php | 2 +-
 .../Mage/Sales/Model/Resource/Report/Order/Createdat.php  | 2 +-
 .../core/Mage/Sales/Model/Resource/Sale/Collection.php    | 2 +-
 .../sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php      | 2 +-
 .../sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php      | 2 +-
 app/code/core/Mage/Shipping/Model/Rate/Result.php         | 2 +-
 app/code/core/Mage/Tag/Helper/Data.php                    | 2 +-
 app/code/core/Mage/Tag/controllers/IndexController.php    | 2 +-
 .../core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php   | 2 +-
 .../Catalog/Product/Attribute/Edit/AttributeForm.php      | 2 +-
 .../Test/Block/Catalog/Product/Edit/Tab/Prices.php        | 4 ++--
 .../Adminhtml/Test/Block/Catalog/Product/ProductForm.php  | 2 +-
 .../app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php     | 4 ++--
 .../tests/app/Mage/Bundle/Test/Handler/Curl.php           | 4 ++--
 .../DeleteOptionsSubStep.php                              | 2 +-
 .../app/Mage/Customer/Test/Handler/Customer/Curl.php      | 2 +-
 .../app/Mage/Weee/Test/Constraint/AssertFptApplied.php    | 2 +-
 lib/Varien/Convert/Parser/Csv.php                         | 4 ++--
 lib/Varien/Db/Statement/Pdo/Mysql.php                     | 2 +-
 lib/Varien/Http/Adapter/Curl.php                          | 2 +-
 lib/Varien/Object.php                                     | 2 +-
 lib/Varien/Object/Cache.php                               | 2 +-
 phpstan.dist.baseline.neon                                | 5 +++++
 71 files changed, 96 insertions(+), 91 deletions(-)

diff --git a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
index afc5f13938c..700d3b3b17d 100644
--- a/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
+++ b/app/code/core/Mage/Adminhtml/Block/Dashboard/Graph.php
@@ -215,7 +215,7 @@ public function getChartUrl($directUrl = true)
                     $dateStart->addMonth(1);
                     break;
             }
-            foreach (array_keys($this->getAllSeries()) as $index) {
+            foreach ($this->getAllSeries() as $index => $serie) {
                 if (in_array($d, $this->_axisLabels['x'])) {
                     $datas[$index][] = (float)array_shift($this->_allSeries[$index]);
                 } else {
@@ -328,7 +328,7 @@ public function getChartUrl($directUrl = true)
         if (count($this->_axisLabels)) {
             $params['chxt'] = implode(',', array_keys($this->_axisLabels));
             $indexid = 0;
-            foreach (array_keys($this->_axisLabels) as $idx) {
+            foreach ($this->_axisLabels as $idx => $labels) {
                 if ($idx === 'x') {
                     /**
                      * Format date
diff --git a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
index 20bb44f96f4..d4872f9158d 100644
--- a/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
+++ b/app/code/core/Mage/Adminhtml/Block/Page/Menu.php
@@ -164,7 +164,7 @@ protected function _buildMenuArray(Varien_Simplexml_Element $parent, $path = '',
 
         uasort($parentArr, [$this, '_sortMenu']);
 
-        foreach (array_keys($parentArr) as $key) {
+        foreach ($parentArr as $key => $value) {
             $last = $key;
         }
         if (isset($last)) {
diff --git a/app/code/core/Mage/Adminhtml/Block/Report/Grid.php b/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
index efc441c2365..180a228a288 100644
--- a/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Report/Grid.php
@@ -207,7 +207,7 @@ protected function _prepareCollection()
      */
     protected function _setFilterValues($data)
     {
-        foreach (array_keys($data) as $name) {
+        foreach ($data as $name => $value) {
             $this->setFilter($name, $data[$name]);
         }
         return $this;
diff --git a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
index 2a585eb5b7d..1e8e12f3dd4 100644
--- a/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Sales/Transactions/Child/Grid.php
@@ -62,7 +62,7 @@ protected function _prepareColumns()
     {
         $result = parent::_prepareColumns();
 
-        foreach (array_keys($this->_columns) as $key) {
+        foreach ($this->_columns as $key => $value) {
             if (in_array($key, $this->_columnsToRemove)) {
                 unset($this->_columns[$key]);
             } else {
diff --git a/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php b/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
index 33442aa26b1..d0c60a17406 100644
--- a/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
+++ b/app/code/core/Mage/Adminhtml/Block/Store/Switcher.php
@@ -73,7 +73,7 @@ public function getWebsites()
     {
         $websites = Mage::app()->getWebsites();
         if ($websiteIds = $this->getWebsiteIds()) {
-            foreach (array_keys($websites) as $websiteId) {
+            foreach ($websites as $websiteId => $website) {
                 if (!in_array($websiteId, $websiteIds)) {
                     unset($websites[$websiteId]);
                 }
@@ -140,7 +140,7 @@ public function getStores($group)
         }
         $stores = $group->getStores();
         if ($storeIds = $this->getStoreIds()) {
-            foreach (array_keys($stores) as $storeId) {
+            foreach ($stores as $storeId => $store) {
                 if (!in_array($storeId, $storeIds)) {
                     unset($stores[$storeId]);
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
index fc959e184ff..9e369a45972 100644
--- a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
+++ b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit.php
@@ -194,7 +194,7 @@ public function getButtonsHtml($area = null)
     {
         if ($this->_buttonsHtml === null) {
             $this->_buttonsHtml = parent::getButtonsHtml();
-            foreach (array_keys($this->_children) as $alias) {
+            foreach ($this->_children as $alias => $child) {
                 if (str_contains($alias, '_button')) {
                     $this->unsetChild($alias);
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
index 955c2f871b0..a91f22b905a 100644
--- a/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
+++ b/app/code/core/Mage/Adminhtml/Block/Urlrewrite/Edit/Form.php
@@ -61,7 +61,7 @@ protected function _prepareForm()
             'description'  => $model->getDescription(),
         ];
         if ($sessionData = Mage::getSingleton('adminhtml/session')->getData('urlrewrite_data', true)) {
-            foreach (array_keys($formValues) as $key) {
+            foreach ($formValues as $key => $value) {
                 if (isset($sessionData[$key])) {
                     $formValues[$key] = $sessionData[$key];
                 }
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php b/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
index 5b701ae5133..af36a237924 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Grid.php
@@ -481,7 +481,7 @@ public function getColumns()
      */
     protected function _setFilterValues($data)
     {
-        foreach (array_keys($data) as $columnId) {
+        foreach ($data as $columnId => $value) {
             $column = $this->getColumn($columnId);
             if ($column instanceof Mage_Adminhtml_Block_Widget_Grid_Column
                 && (!empty($data[$columnId]) || strlen($data[$columnId]) > 0)
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php b/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
index 9bdad27dbbf..1fe5f9905b6 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Grid/Column/Renderer/Action.php
@@ -109,7 +109,7 @@ protected function _toLinkHtml($action, Varien_Object $row)
      */
     protected function _transformActionData(&$action, &$actionCaption, Varien_Object $row)
     {
-        foreach (array_keys($action) as $attribute) {
+        foreach ($action as $attribute => $value) {
             if (isset($action[$attribute]) && !is_array($action[$attribute])) {
                 $this->getColumn()->setFormat($action[$attribute]);
                 $action[$attribute] = parent::render($row);
diff --git a/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php b/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
index ca58c8f7fc6..94e9fae48a6 100644
--- a/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
+++ b/app/code/core/Mage/Adminhtml/Block/Widget/Tabs.php
@@ -256,7 +256,7 @@ protected function _reorderTabs()
         asort($this->_tabPositions);
 
         $ordered = [];
-        foreach (array_keys($this->_tabPositions) as $tabId) {
+        foreach ($this->_tabPositions as $tabId => $position) {
             if (isset($this->_tabs[$tabId])) {
                 $tab = $this->_tabs[$tabId];
                 $ordered[$tabId] = $tab;
diff --git a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
index 92bfd9d0639..e79b3daedc4 100644
--- a/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
+++ b/app/code/core/Mage/Adminhtml/Model/System/Config/Source/Admin/Page.php
@@ -109,7 +109,7 @@ protected function _buildMenuArray(?Varien_Simplexml_Element $parent = null, $pa
 
         uasort($parentArr, [$this, '_sortMenu']);
 
-        foreach (array_keys($parentArr) as $key) {
+        foreach ($parentArr as $key => $value) {
             $last = $key;
         }
         if (isset($last)) {
diff --git a/app/code/core/Mage/Api2/Model/Acl/Filter.php b/app/code/core/Mage/Api2/Model/Acl/Filter.php
index cefef4dd4f6..3494dfceb14 100644
--- a/app/code/core/Mage/Api2/Model/Acl/Filter.php
+++ b/app/code/core/Mage/Api2/Model/Acl/Filter.php
@@ -61,7 +61,7 @@ public function __construct(Mage_Api2_Model_Resource $resource)
      */
     protected function _filter(array $allowedAttributes, array $data)
     {
-        foreach (array_keys($data) as $attribute) {
+        foreach ($data as $attribute => $value) {
             if (!in_array($attribute, $allowedAttributes)) {
                 unset($data[$attribute]);
             }
diff --git a/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php b/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
index f58a244ca00..1016b87c227 100644
--- a/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
+++ b/app/code/core/Mage/Api2/Model/Acl/Filter/Attribute/ResourcePermission.php
@@ -103,7 +103,7 @@ public function getResourcesPermissions()
                             $resourceModel->setResourceType($resource)
                                 ->setUserType($this->_userType);
 
-                            foreach (array_keys($operations) as $operation) {
+                            foreach ($operations as $operation => $operationLabel) {
                                 if (!$this->_hasEntityOnlyAttributes
                                     && $config->getResourceEntityOnlyAttributes($resource, $this->_userType, $operation)
                                 ) {
diff --git a/app/code/core/Mage/Catalog/Model/Api2/Product.php b/app/code/core/Mage/Catalog/Model/Api2/Product.php
index f757413be4b..586f1db4acd 100644
--- a/app/code/core/Mage/Catalog/Model/Api2/Product.php
+++ b/app/code/core/Mage/Catalog/Model/Api2/Product.php
@@ -42,7 +42,7 @@ public function getAvailableAttributes($userType, $operation)
         }
         $excludedAttrs = $this->getExcludedAttributes($userType, $operation);
         $includedAttrs = $this->getIncludedAttributes($userType, $operation);
-        foreach (array_keys($attributes) as $code) {
+        foreach ($attributes as $code => $label) {
             if (in_array($code, $excludedAttrs) || ($includedAttrs && !in_array($code, $includedAttrs))) {
                 unset($attributes[$code]);
             }
diff --git a/app/code/core/Mage/Catalog/Model/Category.php b/app/code/core/Mage/Catalog/Model/Category.php
index 5ff10b609dc..58cd0b2c7c9 100644
--- a/app/code/core/Mage/Catalog/Model/Category.php
+++ b/app/code/core/Mage/Catalog/Model/Category.php
@@ -346,7 +346,7 @@ public function getAttributes($noDesignAttributes = false)
             ->getSortedAttributes();
 
         if ($noDesignAttributes) {
-            foreach (array_keys($result) as $k) {
+            foreach ($result as $k => $a) {
                 if (in_array($k, $this->_designAttributes)) {
                     unset($result[$k]);
                 }
diff --git a/app/code/core/Mage/Catalog/Model/Product/Type/Price.php b/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
index df7d7f731c9..62e6d7f86ae 100644
--- a/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
+++ b/app/code/core/Mage/Catalog/Model/Product/Type/Price.php
@@ -300,7 +300,7 @@ public function getFormatedTierPrice($qty, $product)
     {
         $price = $product->getTierPrice($qty);
         if (is_array($price)) {
-            foreach (array_keys($price) as $index) {
+            foreach ($price as $index => $value) {
                 $price[$index]['formated_price'] = Mage::app()->getStore()->convertPrice(
                     $price[$index]['website_price'],
                     true
diff --git a/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php b/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
index 7e962fb0b72..3a03e409ef5 100644
--- a/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
+++ b/app/code/core/Mage/Catalog/Model/Resource/Category/Flat.php
@@ -1152,7 +1152,7 @@ protected function _prepareDataForAllFields($category, $replaceFields = [])
         $table = $this->_getReadAdapter()->describeTable($table);
         $data = [];
         $idFieldName = Mage::getSingleton('catalog/category')->getIdFieldName();
-        foreach (array_keys($table) as $column) {
+        foreach ($table as $column => $columnData) {
             if ($column != $idFieldName || $category->getData($column) !== null) {
                 if (array_key_exists($column, $replaceFields)) {
                     $value = $category->getData($replaceFields[$column]);
diff --git a/app/code/core/Mage/Checkout/Model/Type/Onepage.php b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
index 2cdbe2eec65..f1d8d4a5ced 100644
--- a/app/code/core/Mage/Checkout/Model/Type/Onepage.php
+++ b/app/code/core/Mage/Checkout/Model/Type/Onepage.php
@@ -119,7 +119,7 @@ public function initCheckout()
         $checkout = $this->getCheckout();
         $customerSession = $this->getCustomerSession();
         if (is_array($checkout->getStepData())) {
-            foreach (array_keys($checkout->getStepData()) as $step) {
+            foreach ($checkout->getStepData() as $step => $data) {
                 if (!($step === 'login' || $customerSession->isLoggedIn() && $step === 'billing')) {
                     $checkout->setStepData($step, 'allow', false);
                 }
diff --git a/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php b/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
index da23ea014ad..db49ed16933 100644
--- a/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
+++ b/app/code/core/Mage/ConfigurableSwatches/Helper/Mediafallback.php
@@ -136,7 +136,7 @@ public function attachProductChildrenAttributeMapping(array $parentProducts, $st
                 } // end looping child products
             } // end looping attributes
 
-            foreach (array_keys($mapping) as $key) {
+            foreach ($mapping as $key => $value) {
                 $mapping[$key]['product_ids'] = array_unique($mapping[$key]['product_ids']);
             }
 
diff --git a/app/code/core/Mage/Core/Helper/Data.php b/app/code/core/Mage/Core/Helper/Data.php
index d3c9a73ac45..73029d7952c 100644
--- a/app/code/core/Mage/Core/Helper/Data.php
+++ b/app/code/core/Mage/Core/Helper/Data.php
@@ -603,7 +603,7 @@ public function assocToXml(array $array, $rootName = '_')
 <$rootName></$rootName>
 XML;
         $xml = new SimpleXMLElement($xmlstr);
-        foreach (array_keys($array) as $key) {
+        foreach ($array as $key => $value) {
             if (is_numeric($key)) {
                 throw new Exception('Array root keys must not be numeric.');
             }
diff --git a/app/code/core/Mage/Core/Model/Cache.php b/app/code/core/Mage/Core/Model/Cache.php
index 9965019bf1e..fe97c2c491f 100644
--- a/app/code/core/Mage/Core/Model/Cache.php
+++ b/app/code/core/Mage/Core/Model/Cache.php
@@ -625,7 +625,7 @@ public function getInvalidatedTypes()
         $types = $this->_getInvalidatedTypes();
         if ($types) {
             $allTypes = $this->getTypes();
-            foreach (array_keys($types) as $type) {
+            foreach ($types as $type => $flag) {
                 if (isset($allTypes[$type]) && $this->canUse($type)) {
                     $invalidatedTypes[$type] = $allTypes[$type];
                 }
diff --git a/app/code/core/Mage/Core/Model/Layout/Validator.php b/app/code/core/Mage/Core/Model/Layout/Validator.php
index 2d14731992b..9bedeaf8621 100644
--- a/app/code/core/Mage/Core/Model/Layout/Validator.php
+++ b/app/code/core/Mage/Core/Model/Layout/Validator.php
@@ -108,7 +108,7 @@ public function getDisallowedBlocks()
         if (!count($this->_disallowedBlock)) {
             $disallowedBlockConfig = $this->_getDisallowedBlockConfigValue();
             if (is_array($disallowedBlockConfig)) {
-                foreach (array_keys($disallowedBlockConfig) as $blockName) {
+                foreach ($disallowedBlockConfig as $blockName => $value) {
                     $this->_disallowedBlock[] = $blockName;
                 }
             }
diff --git a/app/code/core/Mage/Core/Model/Locale.php b/app/code/core/Mage/Core/Model/Locale.php
index 2a0c44563c3..d3b70a7c1cd 100644
--- a/app/code/core/Mage/Core/Model/Locale.php
+++ b/app/code/core/Mage/Core/Model/Locale.php
@@ -247,7 +247,7 @@ protected function _getOptionLocales($translatedName = false)
             }
         }
 
-        foreach (array_keys($locales) as $code) {
+        foreach ($locales as $code => $active) {
             if (strstr($code, '_')) {
                 if (!in_array($code, $allowed)) {
                     continue;
diff --git a/app/code/core/Mage/Core/Model/Log/Adapter.php b/app/code/core/Mage/Core/Model/Log/Adapter.php
index 1a173c94d99..3bc190114c0 100644
--- a/app/code/core/Mage/Core/Model/Log/Adapter.php
+++ b/app/code/core/Mage/Core/Model/Log/Adapter.php
@@ -115,7 +115,7 @@ public function setFilterDataKeys($keys)
     protected function _filterDebugData($debugData)
     {
         if (is_array($debugData) && is_array($this->_debugReplacePrivateDataKeys)) {
-            foreach (array_keys($debugData) as $key) {
+            foreach ($debugData as $key => $value) {
                 if (in_array($key, $this->_debugReplacePrivateDataKeys)) {
                     $debugData[$key] = '****';
                 } else {
diff --git a/app/code/core/Mage/Core/Model/Url/Rewrite.php b/app/code/core/Mage/Core/Model/Url/Rewrite.php
index 929f39be12c..a9bae5f2912 100644
--- a/app/code/core/Mage/Core/Model/Url/Rewrite.php
+++ b/app/code/core/Mage/Core/Model/Url/Rewrite.php
@@ -319,7 +319,7 @@ protected function _getQueryString()
             $queryParams = [];
             parse_str($_SERVER['QUERY_STRING'], $queryParams);
             $hasChanges = false;
-            foreach (array_keys($queryParams) as $key) {
+            foreach ($queryParams as $key => $value) {
                 if (substr($key, 0, 3) === '___') {
                     unset($queryParams[$key]);
                     $hasChanges = true;
diff --git a/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php b/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
index f6c14bf4b9a..80bf9ce24de 100644
--- a/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
+++ b/app/code/core/Mage/Core/Model/Url/Rewrite/Request.php
@@ -306,7 +306,7 @@ protected function _getQueryString()
             $queryParams = [];
             parse_str($_SERVER['QUERY_STRING'], $queryParams);
             $hasChanges = false;
-            foreach (array_keys($queryParams) as $key) {
+            foreach ($queryParams as $key => $value) {
                 if (substr($key, 0, 3) === '___') {
                     unset($queryParams[$key]);
                     $hasChanges = true;
diff --git a/app/code/core/Mage/Customer/Model/Address/Api.php b/app/code/core/Mage/Customer/Model/Address/Api.php
index 9f779558882..63120a58f38 100644
--- a/app/code/core/Mage/Customer/Model/Address/Api.php
+++ b/app/code/core/Mage/Customer/Model/Address/Api.php
@@ -55,7 +55,7 @@ public function items($customerId)
                 $row[$attributeAlias] = $data[$attributeCode] ?? null;
             }
 
-            foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+            foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
                 if (isset($data[$attributeCode])) {
                     $row[$attributeCode] = $data[$attributeCode];
                 }
@@ -89,7 +89,7 @@ public function create($customerId, $addressData)
 
         $address = Mage::getModel('customer/address');
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             if (isset($addressData[$attributeCode])) {
                 $address->setData($attributeCode, $addressData[$attributeCode]);
             }
@@ -141,7 +141,7 @@ public function info($addressId)
             $result[$attributeAlias] = $address->getData($attributeCode);
         }
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             $result[$attributeCode] = $address->getData($attributeCode);
         }
 
@@ -169,7 +169,7 @@ public function update($addressId, $addressData)
             $this->_fault('not_exists');
         }
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             if (isset($addressData[$attributeCode])) {
                 $address->setData($attributeCode, $addressData[$attributeCode]);
             }
diff --git a/app/code/core/Mage/Customer/Model/Address/Api/V2.php b/app/code/core/Mage/Customer/Model/Address/Api/V2.php
index 901b932eef7..8616fec57a1 100644
--- a/app/code/core/Mage/Customer/Model/Address/Api/V2.php
+++ b/app/code/core/Mage/Customer/Model/Address/Api/V2.php
@@ -40,7 +40,7 @@ public function create($customerId, $addressData)
 
         $address = Mage::getModel('customer/address');
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             if (isset($addressData->$attributeCode)) {
                 $address->setData($attributeCode, $addressData->$attributeCode);
             }
@@ -92,7 +92,7 @@ public function info($addressId)
             $result[$attributeAlias] = $address->getData($attributeCode);
         }
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             $result[$attributeCode] = $address->getData($attributeCode);
         }
 
@@ -120,7 +120,7 @@ public function update($addressId, $addressData)
             $this->_fault('not_exists');
         }
 
-        foreach (array_keys($this->getAllowedAttributes($address)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($address) as $attributeCode => $attribute) {
             if (isset($addressData->$attributeCode)) {
                 $address->setData($attributeCode, $addressData->$attributeCode);
             }
diff --git a/app/code/core/Mage/Customer/Model/Customer/Api.php b/app/code/core/Mage/Customer/Model/Customer/Api.php
index f8daaa27a89..16853c6c60e 100644
--- a/app/code/core/Mage/Customer/Model/Customer/Api.php
+++ b/app/code/core/Mage/Customer/Model/Customer/Api.php
@@ -87,7 +87,7 @@ public function info($customerId, $attributes = null)
             $result[$attributeAlias] = $customer->getData($attributeCode);
         }
 
-        foreach (array_keys($this->getAllowedAttributes($customer, $attributes)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($customer, $attributes) as $attributeCode => $attribute) {
             $result[$attributeCode] = $customer->getData($attributeCode);
         }
 
@@ -121,7 +121,7 @@ public function items($filters)
             foreach ($this->_mapAttributes as $attributeAlias => $attributeCode) {
                 $row[$attributeAlias] = $data[$attributeCode] ?? null;
             }
-            foreach (array_keys($this->getAllowedAttributes($customer)) as $attributeCode) {
+            foreach ($this->getAllowedAttributes($customer) as $attributeCode => $attribute) {
                 if (isset($data[$attributeCode])) {
                     $row[$attributeCode] = $data[$attributeCode];
                 }
@@ -149,7 +149,7 @@ public function update($customerId, $customerData)
             $this->_fault('not_exists');
         }
 
-        foreach (array_keys($this->getAllowedAttributes($customer)) as $attributeCode) {
+        foreach ($this->getAllowedAttributes($customer) as $attributeCode => $attribute) {
             if (isset($customerData[$attributeCode])) {
                 $customer->setData($attributeCode, $customerData[$attributeCode]);
             }
diff --git a/app/code/core/Mage/Dataflow/Model/Batch.php b/app/code/core/Mage/Dataflow/Model/Batch.php
index 1235b8f468f..1f727062e73 100644
--- a/app/code/core/Mage/Dataflow/Model/Batch.php
+++ b/app/code/core/Mage/Dataflow/Model/Batch.php
@@ -92,12 +92,12 @@ public function getFieldList()
      */
     public function parseFieldList($row)
     {
-        foreach (array_keys($row) as $fieldName) {
+        foreach ($row as $fieldName => $value) {
             if (!in_array($fieldName, $this->_fieldList)) {
                 $this->_fieldList[$fieldName] = $fieldName;
             }
         }
-        unset($fieldName, $row);
+        unset($fieldName, $value, $row);
     }
 
     /**
diff --git a/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php b/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
index fdf30b8c5f6..1a15c400f15 100644
--- a/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
+++ b/app/code/core/Mage/Dataflow/Model/Session/Parser/Csv.php
@@ -47,7 +47,7 @@ public function parse()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach (array_keys($line) as $j) {
+                    foreach ($line as $j => $f) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
diff --git a/app/code/core/Mage/Eav/Model/Entity/Abstract.php b/app/code/core/Mage/Eav/Model/Entity/Abstract.php
index 01c39e4c918..25c93a56c2e 100644
--- a/app/code/core/Mage/Eav/Model/Entity/Abstract.php
+++ b/app/code/core/Mage/Eav/Model/Entity/Abstract.php
@@ -1594,7 +1594,7 @@ public function delete($object)
             ];
             $this->_getWriteAdapter()->delete($this->getEntityTable(), $where);
             $this->loadAllAttributes($object);
-            foreach (array_keys($this->getAttributesByTable()) as $table) {
+            foreach ($this->getAttributesByTable() as $table => $attributes) {
                 $this->_getWriteAdapter()->delete($table, $where);
             }
         } catch (Exception $e) {
diff --git a/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
index 1ecb2e87b92..91b578e810a 100644
--- a/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
@@ -790,7 +790,7 @@ protected function _prepareExport()
                 '_custom_option_row_sku', '_custom_option_row_sort'
             ];
 
-            foreach (array_keys($this->_storeIdToCode) as &$storeId) {
+            foreach ($this->_storeIdToCode as $storeId => &$storeCode) {
                 $skip = false;
                 $options = Mage::getResourceModel('catalog/product_option_collection')
                     ->reset()
@@ -961,7 +961,7 @@ protected function _prepareExport()
                         $dataRow = array_merge($dataRow, array_shift($configurableData[$productId]));
                     }
                     if (!empty($rowMultiselects[$productId][$storeId])) {
-                        foreach (array_keys($rowMultiselects[$productId][$storeId]) as $attrKey) {
+                        foreach ($rowMultiselects[$productId][$storeId] as $attrKey => $attrVal) {
                             if (isset($rowMultiselects[$productId][$storeId][$attrKey])) {
                                 $dataRow[$attrKey] = array_shift($rowMultiselects[$productId][$storeId][$attrKey]);
                             }
@@ -1039,7 +1039,7 @@ protected function _prepareExport()
                                 $dataRow = array_merge($dataRow, array_shift($configurableData[$productId]));
                             }
                             if (!empty($rowMultiselects[$productId][$storeId])) {
-                                foreach (array_keys($rowMultiselects[$productId][$storeId]) as $attrKey) {
+                                foreach ($rowMultiselects[$productId][$storeId] as $attrKey => $attrVal) {
                                     if (isset($rowMultiselects[$productId][$storeId][$attrKey])) {
                                         $dataRow[$attrKey] = array_shift($rowMultiselects[$productId][$storeId][$attrKey]);
                                     }
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
index a80445efc8b..3ad37c5afb3 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Customer.php
@@ -548,7 +548,7 @@ public function getEntityTypeCode()
     public function getRowScope(array $rowData)
     {
         $foundOptions = false;
-        foreach (array_keys($this->_multiSelectAttributes) as $attrCode) {
+        foreach ($this->_multiSelectAttributes as $attrCode => $attribute) {
             if ($rowData[$attrCode]) {
                 $foundOptions = true;
             }
diff --git a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
index ce5f1e8327f..2acd52bbc58 100644
--- a/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
+++ b/app/code/core/Mage/ImportExport/Model/Import/Entity/Product.php
@@ -1101,7 +1101,7 @@ protected function _saveCustomOptions()
             if ($productIds) { // update product entity table to show that product has options
                 $customOptionsProducts = $customOptions['product_id'];
 
-                foreach (array_keys($customOptionsProducts) as $key) {
+                foreach ($customOptionsProducts as $key => $value) {
                     if (!in_array($key, $productIds)) {
                         unset($customOptionsProducts[$key]);
                     }
diff --git a/app/code/core/Mage/Index/Model/Event.php b/app/code/core/Mage/Index/Model/Event.php
index d4dc4468a17..2035a5be359 100644
--- a/app/code/core/Mage/Index/Model/Event.php
+++ b/app/code/core/Mage/Index/Model/Event.php
@@ -157,7 +157,7 @@ protected function _mergeNewDataRecursive($previous, $current)
             return $previous;
         }
 
-        foreach (array_keys($previous) as $key) {
+        foreach ($previous as $key => $value) {
             if (array_key_exists($key, $current) && !is_null($current[$key]) && is_array($previous[$key])) {
                 if (!is_string($key) || is_array($current[$key])) {
                     $current[$key] = $this->_mergeNewDataRecursive($previous[$key], $current[$key]);
diff --git a/app/code/core/Mage/Install/Block/Db/Main.php b/app/code/core/Mage/Install/Block/Db/Main.php
index 25791d2f5f8..9f0789c1ea3 100644
--- a/app/code/core/Mage/Install/Block/Db/Main.php
+++ b/app/code/core/Mage/Install/Block/Db/Main.php
@@ -77,7 +77,7 @@ public function getDatabaseBlock($type)
     public function getDatabaseBlocks()
     {
         $databases = [];
-        foreach (array_keys($this->_databases) as $type) {
+        foreach ($this->_databases as $type => $blockData) {
             $databases[] = $this->getDatabaseBlock($type);
         }
         return $databases;
diff --git a/app/code/core/Mage/Install/Model/Installer/Console.php b/app/code/core/Mage/Install/Model/Installer/Console.php
index 7c31a5007ab..033d8db36a4 100644
--- a/app/code/core/Mage/Install/Model/Installer/Console.php
+++ b/app/code/core/Mage/Install/Model/Installer/Console.php
@@ -155,7 +155,7 @@ public function setArgs($args = null)
         /**
          * Set args values
          */
-        foreach (array_keys($this->_getOptions()) as $name) {
+        foreach ($this->_getOptions() as $name => $option) {
             $this->_args[$name] = $args[$name] ?? '';
         }
 
diff --git a/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php b/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
index 33b6de0c2ea..40155d07e4a 100644
--- a/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
+++ b/app/code/core/Mage/Install/Model/Installer/Db/Abstract.php
@@ -136,7 +136,7 @@ public function getRequiredExtensions()
     {
         $extensions = [];
         $configExt = (array)Mage::getConfig()->getNode(sprintf('install/databases/%s/extensions', $this->getModel()));
-        foreach (array_keys($configExt) as $name) {
+        foreach ($configExt as $name => $value) {
             $extensions[] = $name;
         }
         return $extensions;
diff --git a/app/code/core/Mage/Page/Block/Template/Links.php b/app/code/core/Mage/Page/Block/Template/Links.php
index aacfd69b27e..b52e2f367eb 100644
--- a/app/code/core/Mage/Page/Block/Template/Links.php
+++ b/app/code/core/Mage/Page/Block/Template/Links.php
@@ -242,7 +242,7 @@ protected function _getNewPosition($position = 0)
             }
         } else {
             $position = 0;
-            foreach (array_keys($this->_links) as $k) {
+            foreach ($this->_links as $k => $v) {
                 $position = $k;
             }
             $position += 10;
diff --git a/app/code/core/Mage/Paygate/Model/Authorizenet.php b/app/code/core/Mage/Paygate/Model/Authorizenet.php
index c32a8b69385..5659e2caac3 100644
--- a/app/code/core/Mage/Paygate/Model/Authorizenet.php
+++ b/app/code/core/Mage/Paygate/Model/Authorizenet.php
@@ -1475,7 +1475,7 @@ protected function _addTransaction(
             $payment->setTransactionAdditionalInfo($key, $value);
         }
         $transaction = $payment->addTransaction($transactionType, null, false, $message);
-        foreach (array_keys($transactionDetails) as $key) {
+        foreach ($transactionDetails as $key => $value) {
             $payment->unsetData($key);
         }
         $payment->unsLastTransId();
diff --git a/app/code/core/Mage/Payment/Block/Form/Cc.php b/app/code/core/Mage/Payment/Block/Form/Cc.php
index 08a12b4c037..5435e7f4a75 100644
--- a/app/code/core/Mage/Payment/Block/Form/Cc.php
+++ b/app/code/core/Mage/Payment/Block/Form/Cc.php
@@ -47,7 +47,7 @@ public function getCcAvailableTypes()
             $availableTypes = $method->getConfigData('cctypes');
             if ($availableTypes) {
                 $availableTypes = explode(',', $availableTypes);
-                foreach (array_keys($types) as $code) {
+                foreach ($types as $code => $name) {
                     if (!in_array($code, $availableTypes)) {
                         unset($types[$code]);
                     }
diff --git a/app/code/core/Mage/Payment/Helper/Data.php b/app/code/core/Mage/Payment/Helper/Data.php
index fed881ddeae..a7f9071c590 100644
--- a/app/code/core/Mage/Payment/Helper/Data.php
+++ b/app/code/core/Mage/Payment/Helper/Data.php
@@ -67,7 +67,7 @@ public function getMethodInstance($code)
     public function getStoreMethods($store = null, $quote = null)
     {
         $res = [];
-        foreach (array_keys($this->getPaymentMethods($store)) as $code) {
+        foreach ($this->getPaymentMethods($store) as $code => $methodConfig) {
             $prefix = self::XML_PATH_PAYMENT_METHODS . '/' . $code . '/';
             if (!$model = Mage::getStoreConfig($prefix . 'model', $store)) {
                 continue;
@@ -166,7 +166,7 @@ public function getBillingAgreementMethods($store = null, $quote = null)
     public function getRecurringProfileMethods($store = null)
     {
         $result = [];
-        foreach (array_keys($this->getPaymentMethods($store)) as $code) {
+        foreach ($this->getPaymentMethods($store) as $code => $data) {
             $paymentMethodModelClassName = $this->getMethodModelClassName($code);
             if (!$paymentMethodModelClassName) {
                 continue;
@@ -244,7 +244,7 @@ public function getPaymentMethodList($sorted = true, $asLabelValue = false, $wit
         }
         if ($asLabelValue) {
             $labelValues = [];
-            foreach (array_keys($methods) as $code) {
+            foreach ($methods as $code => $title) {
                 $labelValues[$code] = [];
             }
             foreach ($methods as $code => $title) {
diff --git a/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php b/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
index fca1a3d661e..ec75245e7e2 100644
--- a/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
+++ b/app/code/core/Mage/Paypal/Model/Resource/Report/Settlement.php
@@ -58,7 +58,7 @@ protected function _afterSave(Mage_Core_Model_Abstract $object)
                 /** @var Mage_Core_Model_Date $date */
                 $date = Mage::getSingleton('core/date');
 
-                foreach (array_keys($rows) as $key) {
+                foreach ($rows as $key => $row) {
                     /*
                      * Converting dates
                      */
diff --git a/app/code/core/Mage/Reports/Model/Totals.php b/app/code/core/Mage/Reports/Model/Totals.php
index 6b98422fdee..33f899cc705 100644
--- a/app/code/core/Mage/Reports/Model/Totals.php
+++ b/app/code/core/Mage/Reports/Model/Totals.php
@@ -47,7 +47,7 @@ public function countTotals($grid, $from, $to)
             }
             $data = $item->getData();
 
-            foreach (array_keys($columns) as $field) {
+            foreach ($columns as $field => $a) {
                 if ($field !== '') {
                     $columns[$field]['value'] += $data[$field] ?? 0;
                 }
diff --git a/app/code/core/Mage/Rule/Model/Action/Abstract.php b/app/code/core/Mage/Rule/Model/Action/Abstract.php
index d8cb87fb7f4..a810922d2f7 100644
--- a/app/code/core/Mage/Rule/Model/Action/Abstract.php
+++ b/app/code/core/Mage/Rule/Model/Action/Abstract.php
@@ -52,11 +52,11 @@ public function __construct()
         parent::__construct();
         $this->loadAttributeOptions()->loadOperatorOptions()->loadValueOptions();
 
-        foreach (array_keys($this->getAttributeOption()) as $attr) {
+        foreach ($this->getAttributeOption() as $attr => $dummy) {
             $this->setAttribute($attr);
             break;
         }
-        foreach (array_keys($this->getOperatorOption()) as $operator) {
+        foreach ($this->getOperatorOption() as $operator => $dummy) {
             $this->setOperator($operator);
             break;
         }
diff --git a/app/code/core/Mage/Rule/Model/Condition/Abstract.php b/app/code/core/Mage/Rule/Model/Condition/Abstract.php
index e31fbdda29c..d2e67c86270 100644
--- a/app/code/core/Mage/Rule/Model/Condition/Abstract.php
+++ b/app/code/core/Mage/Rule/Model/Condition/Abstract.php
@@ -92,13 +92,13 @@ public function __construct()
         $this->loadAttributeOptions()->loadOperatorOptions()->loadValueOptions();
 
         if ($options = $this->getAttributeOptions()) {
-            foreach (array_keys($options) as $attr) {
+            foreach ($options as $attr => $dummy) {
                 $this->setAttribute($attr);
                 break;
             }
         }
         if ($options = $this->getOperatorOptions()) {
-            foreach (array_keys($options) as $operator) {
+            foreach ($options as $operator => $dummy) {
                 $this->setOperator($operator);
                 break;
             }
@@ -503,7 +503,7 @@ public function getTypeElementHtml()
     public function getAttributeElement()
     {
         if (is_null($this->getAttribute())) {
-            foreach (array_keys($this->getAttributeOption()) as $k) {
+            foreach ($this->getAttributeOption() as $k => $v) {
                 $this->setAttribute($k);
                 break;
             }
diff --git a/app/code/core/Mage/Rule/Model/Condition/Combine.php b/app/code/core/Mage/Rule/Model/Condition/Combine.php
index 1d9b0093d13..79d4e693c38 100644
--- a/app/code/core/Mage/Rule/Model/Condition/Combine.php
+++ b/app/code/core/Mage/Rule/Model/Condition/Combine.php
@@ -95,7 +95,7 @@ public function __construct()
 
         $this->loadAggregatorOptions();
         if ($options = $this->getAggregatorOptions()) {
-            foreach (array_keys($options) as $aggregator) {
+            foreach ($options as $aggregator => $dummy) {
                 $this->setAggregator($aggregator);
                 break;
             }
diff --git a/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php b/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
index 713bee21bab..52bf6a9b347 100644
--- a/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
+++ b/app/code/core/Mage/Sales/Block/Adminhtml/Customer/Edit/Tab/Agreement.php
@@ -125,7 +125,7 @@ protected function _prepareColumns()
     {
         $result = parent::_prepareColumns();
 
-        foreach (array_keys($this->_columns) as $key) {
+        foreach ($this->_columns as $key => $value) {
             if (in_array($key, $this->_columnsToRemove)) {
                 unset($this->_columns[$key]);
             }
diff --git a/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php b/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
index a9971351972..323ce47e00f 100644
--- a/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
+++ b/app/code/core/Mage/Sales/Model/Resource/Report/Order/Createdat.php
@@ -230,7 +230,7 @@ protected function _aggregateByField($aggregationField, $from, $to)
             $adapter->query($select->insertFromSelect($this->getMainTable(), array_keys($columns)));
 
             // setup all columns to select SUM() except period, store_id and order_status
-            foreach (array_keys($columns) as $k) {
+            foreach ($columns as $k => $v) {
                 $columns[$k] = new Zend_Db_Expr('SUM(' . $k . ')');
             }
             $columns['period']         = 'period';
diff --git a/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php b/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
index f2972e84cc9..1bf6ed99bf1 100644
--- a/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
+++ b/app/code/core/Mage/Sales/Model/Resource/Sale/Collection.php
@@ -182,7 +182,7 @@ public function load($printQuery = false, $logQuery = false)
                 ->setWebsiteId(Mage::app()->getStore($storeId)->getWebsiteId())
                 ->setAvgNormalized($v['avgsale'] * $v['num_orders']);
             $this->_items[$storeId] = $storeObject;
-            foreach (array_keys($this->_totals) as $key) {
+            foreach ($this->_totals as $key => $value) {
                 $this->_totals[$key] += $storeObject->getData($key);
             }
         }
diff --git a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
index 9525a968c57..43d089aa854 100644
--- a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
+++ b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.8.13-0.8.14.php
@@ -183,7 +183,7 @@
 $select->from(['e' => $this->getTable('sales_order_entity')]);
 
 $attributeIds = [];
-foreach (array_keys($attributes) as $code) {
+foreach ($attributes as $code => $params) {
     $attributes[$code] = $installer->getAttribute($orderEntityTypeId, $code);
     if ($attributes[$code]['backend_type'] != 'static') {
         $select->joinLeft(
diff --git a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
index 69722481f54..3e9e34ea693 100644
--- a/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
+++ b/app/code/core/Mage/Sales/sql/sales_setup/mysql4-upgrade-0.9.50-0.9.51.php
@@ -46,7 +46,7 @@
 ");
 
 /* get order_payment attribute codes*/
-foreach (array_keys($attributesIds) as $attributeCode) {
+foreach ($attributesIds as $attributeCode => $attributeId) {
     $attributesIds[$attributeCode] = $connection->fetchOne("
         SELECT attribute_id
         FROM {$this->getTable('eav_attribute')}
diff --git a/app/code/core/Mage/Shipping/Model/Rate/Result.php b/app/code/core/Mage/Shipping/Model/Rate/Result.php
index bc7ad148a12..fa06daacb29 100644
--- a/app/code/core/Mage/Shipping/Model/Rate/Result.php
+++ b/app/code/core/Mage/Shipping/Model/Rate/Result.php
@@ -180,7 +180,7 @@ public function sortRatesByPrice()
 
         natsort($tmp);
 
-        foreach (array_keys($tmp) as $i) {
+        foreach ($tmp as $i => $price) {
             $result[] = $this->_rates[$i];
         }
 
diff --git a/app/code/core/Mage/Tag/Helper/Data.php b/app/code/core/Mage/Tag/Helper/Data.php
index a2de68080cc..c86d4d5eee1 100644
--- a/app/code/core/Mage/Tag/Helper/Data.php
+++ b/app/code/core/Mage/Tag/Helper/Data.php
@@ -73,7 +73,7 @@ public function extractTags($tagNamesInString)
      */
     public function cleanTags(array $tagNamesArr)
     {
-        foreach (array_keys($tagNamesArr) as $key) {
+        foreach ($tagNamesArr as $key => $tagName) {
             $tagNamesArr[$key] = trim($tagNamesArr[$key], '\'');
             $tagNamesArr[$key] = trim($tagNamesArr[$key]);
             if ($tagNamesArr[$key] == '') {
diff --git a/app/code/core/Mage/Tag/controllers/IndexController.php b/app/code/core/Mage/Tag/controllers/IndexController.php
index 833837c75b6..54b26c441f7 100644
--- a/app/code/core/Mage/Tag/controllers/IndexController.php
+++ b/app/code/core/Mage/Tag/controllers/IndexController.php
@@ -99,7 +99,7 @@ protected function _extractTags($tagNamesInString)
      */
     protected function _cleanTags(array $tagNamesArr)
     {
-        foreach (array_keys($tagNamesArr) as $key) {
+        foreach ($tagNamesArr as $key => $tagName) {
             $tagNamesArr[$key] = trim($tagNamesArr[$key], '\'');
             $tagNamesArr[$key] = trim($tagNamesArr[$key]);
             if ($tagNamesArr[$key] == '') {
diff --git a/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php b/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
index f6ed065e028..ed49099010c 100644
--- a/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
+++ b/app/code/core/Mage/Weee/Model/Attribute/Backend/Weee/Tax.php
@@ -74,7 +74,7 @@ public function afterLoad($object)
     {
         $data = $this->_getResource()->loadProductData($object, $this->getAttribute());
 
-        foreach (array_keys($data) as $i) {
+        foreach ($data as $i => $row) {
             if ($data[$i]['website_id'] == 0) {
                 $rate = Mage::app()->getStore()->getBaseCurrency()->getRate(Mage::app()->getBaseCurrencyCode());
                 if ($rate) {
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
index 1344cfc1a92..9683e4322cd 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Attribute/Edit/AttributeForm.php
@@ -45,7 +45,7 @@ public function getData(FixtureInterface $fixture = null, Element $element = nul
     {
         $data = [];
         if ($fixture === null) {
-            foreach (array_keys($this->tabs) as $tabName) {
+            foreach ($this->tabs as $tabName => $tab) {
                 $this->openTab($tabName);
                 $tabData = $this->getTabElement($tabName)->getDataFormTab();
                 $data = array_merge($data, $tabData);
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
index 657f84a8239..3346dcc17a8 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/Edit/Tab/Prices.php
@@ -54,7 +54,7 @@ class Prices extends Tab
     public function fillFormTab(array $fields, Element $element = null)
     {
         $context = $element ? $element : $this->_rootElement;
-        foreach (array_keys($this->childrenForm) as $key) {
+        foreach ($this->childrenForm as $key => $value) {
             if (isset($fields[$key])) {
                 $this->fillOptionsPrices([$key => $fields[$key]], $context);
                 unset($fields[$key]);
@@ -91,7 +91,7 @@ public function getDataFormTab($fields = null, Element $element = null)
     {
         $result = [];
         $context = $element ? $element : $this->_rootElement;
-        foreach (array_keys($this->childrenForm) as $key) {
+        foreach ($this->childrenForm as $key => $value) {
             if (isset($fields[$key])) {
                 $result[$key] = $this->getOptionsPrices([$key => $fields[$key]], $context);
                 unset($fields[$key]);
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
index 565b823b7c5..584a8f25fbc 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Catalog/Product/ProductForm.php
@@ -341,7 +341,7 @@ public function getRequireNoticeAttributes(FixtureInterface $product)
     {
         $data = [];
         $tabs = $this->getFieldsByTabs($product);
-        foreach (array_keys($tabs) as $tabName) {
+        foreach ($tabs as $tabName => $fields) {
             $tab = $this->getTabElement($tabName);
             $this->openTab($tabName);
             $errors = $tab->getRequireNoticeMessages();
diff --git a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
index a0c24f0c42d..8d9596cda76 100644
--- a/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
+++ b/dev/tests/functional/tests/app/Mage/Adminhtml/Test/Block/Widget/FormTabs.php
@@ -135,7 +135,7 @@ protected function fillTabs(array $tabs, Element $element = null)
      */
     protected function fillMissedFields()
     {
-        foreach (array_keys($this->tabs) as $tabName) {
+        foreach ($this->tabs as $tabName => $tabData) {
             $tabElement = $this->getTabElement($tabName);
             if ($this->openTab($tabName)) {
                 $mapping = $tabElement->dataMapping($this->unassignedFields);
@@ -174,7 +174,7 @@ public function getData(FixtureInterface $fixture = null, Element $element = nul
         $data = [];
 
         if (null === $fixture) {
-            foreach (array_keys($this->tabs) as $tabName) {
+            foreach ($this->tabs as $tabName => $tab) {
                 $this->openTab($tabName);
                 $tabData = $this->getTabElement($tabName)->getDataFormTab();
                 $data = array_merge($data, $tabData);
diff --git a/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php b/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
index eb79bfc90ef..e4777d9f973 100644
--- a/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
+++ b/dev/tests/functional/tests/app/Mage/Bundle/Test/Handler/Curl.php
@@ -146,7 +146,7 @@ protected function prepareBundleSelections(array $bundleData)
      */
     protected function prepareItemSelectionData(array $selections, array $products)
     {
-        foreach (array_keys($selections) as $key) {
+        foreach ($selections as $key => $selection) {
             $selections[$key]['product_id'] = $products[$key]->getId();
             unset($selections[$key]['sku']);
             $selections[$key]['delete'] = '';
@@ -163,7 +163,7 @@ protected function prepareItemSelectionData(array $selections, array $products)
      */
     protected function prepareBundleOptions(array $bundleData)
     {
-        foreach (array_keys($bundleData) as $key) {
+        foreach ($bundleData as $key => $option) {
             $bundleData[$key] = array_intersect_key($bundleData[$key], array_flip($this->optionsFields));
             $bundleData[$key]['delete'] = '';
         }
diff --git a/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php b/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
index 16d05ab359c..6b18d2b8ea3 100644
--- a/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
+++ b/dev/tests/functional/tests/app/Mage/Catalog/Test/TestStep/UpdateConfigurableProductStep/DeleteOptionsSubStep.php
@@ -86,7 +86,7 @@ protected function searchKeysForOption($optionIndex)
     {
         $keys = [];
         $originalProductAssignedProducts = $this->getOriginalProductAssignedProducts();
-        foreach (array_keys($originalProductAssignedProducts) as $key) {
+        foreach ($originalProductAssignedProducts as $key => $product) {
             if (strpos($key, 'option_key_' . $optionIndex) !== false) {
                 $keys[] = $key;
             }
diff --git a/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php b/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
index 23d27ff801b..68f2f85b69a 100644
--- a/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
+++ b/dev/tests/functional/tests/app/Mage/Customer/Test/Handler/Customer/Curl.php
@@ -131,7 +131,7 @@ public function persist(FixtureInterface $customer = null)
      */
     protected function checkForUpdateData(array $data)
     {
-        foreach (array_keys($data) as $key) {
+        foreach ($data as $key => $field) {
             if (in_array($key, $this->updatingFields)) {
                 return true;
             }
diff --git a/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php b/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
index baf99e0e016..c1b61df6d23 100644
--- a/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
+++ b/dev/tests/functional/tests/app/Mage/Weee/Test/Constraint/AssertFptApplied.php
@@ -145,7 +145,7 @@ protected function clearShoppingCart()
     protected function getPrices()
     {
         $actualPrices = [];
-        foreach (array_keys($this->expectedPrices) as $priceType) {
+        foreach ($this->expectedPrices as $priceType => $prices) {
             $actualPrices[$priceType] = $this->{'get' . ucfirst($priceType) . 'Price'}();
         }
 
diff --git a/lib/Varien/Convert/Parser/Csv.php b/lib/Varien/Convert/Parser/Csv.php
index 4550d155691..f857c3b85a8 100644
--- a/lib/Varien/Convert/Parser/Csv.php
+++ b/lib/Varien/Convert/Parser/Csv.php
@@ -44,7 +44,7 @@ public function parse()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach (array_keys($line) as $j) {
+                    foreach ($line as $j => $f) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
@@ -87,7 +87,7 @@ public function parseTest()
                     $fields = $line;
                     continue;
                 } else {
-                    foreach (array_keys($line) as $j) {
+                    foreach ($line as $j => $f) {
                         $fields[$j] = 'column' . ($j + 1);
                     }
                 }
diff --git a/lib/Varien/Db/Statement/Pdo/Mysql.php b/lib/Varien/Db/Statement/Pdo/Mysql.php
index d5f83882237..b23cb8435fa 100644
--- a/lib/Varien/Db/Statement/Pdo/Mysql.php
+++ b/lib/Varien/Db/Statement/Pdo/Mysql.php
@@ -33,7 +33,7 @@ public function _executeWithBinding(array $params)
     {
         // Check whether we deal with named bind
         $isPositionalBind = true;
-        foreach (array_keys($params) as $k) {
+        foreach ($params as $k => $v) {
             if (!is_int($k)) {
                 $isPositionalBind = false;
                 break;
diff --git a/lib/Varien/Http/Adapter/Curl.php b/lib/Varien/Http/Adapter/Curl.php
index 1e9fd81f16b..56e9359a23f 100644
--- a/lib/Varien/Http/Adapter/Curl.php
+++ b/lib/Varien/Http/Adapter/Curl.php
@@ -75,7 +75,7 @@ protected function _applyConfig()
         $verifyHost = isset($this->_config['verifyhost']) ? $this->_config['verifyhost'] : 0;
         curl_setopt($this->_getResource(), CURLOPT_SSL_VERIFYHOST, $verifyHost);
 
-        foreach (array_keys($this->_config) as $param) {
+        foreach ($this->_config as $param => $curlOption) {
             if (array_key_exists($param, $this->_allowedParams)) {
                 curl_setopt($this->_getResource(), $this->_allowedParams[$param], $this->_config[$param]);
             }
diff --git a/lib/Varien/Object.php b/lib/Varien/Object.php
index 968d5b0fc02..bfd0f11bcff 100644
--- a/lib/Varien/Object.php
+++ b/lib/Varien/Object.php
@@ -292,7 +292,7 @@ public function unsetData($key = null)
     public function unsetOldData($key = null)
     {
         if (is_null($key)) {
-            foreach (array_keys($this->_oldFieldsMap) as $key) {
+            foreach ($this->_oldFieldsMap as $key => $newFieldName) {
                 unset($this->_data[$key]);
             }
         } else {
diff --git a/lib/Varien/Object/Cache.php b/lib/Varien/Object/Cache.php
index 24047b87356..11b6cc23775 100644
--- a/lib/Varien/Object/Cache.php
+++ b/lib/Varien/Object/Cache.php
@@ -241,7 +241,7 @@ public function delete($idx)
         }
 
         if (isset($this->_objectReferences[$idx])) {
-            foreach (array_keys($this->_references) as $r) {
+            foreach ($this->_references as $r => $dummy) {
                 unset($this->_references[$r]);
             }
             unset($this->_objectReferences[$idx]);
diff --git a/phpstan.dist.baseline.neon b/phpstan.dist.baseline.neon
index 40723ea0e61..bf2f4ca58bd 100644
--- a/phpstan.dist.baseline.neon
+++ b/phpstan.dist.baseline.neon
@@ -3365,6 +3365,11 @@ parameters:
 			count: 1
 			path: app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
 
+		-
+			message: "#^Offset int\\|string on non\\-empty\\-array\\<int\\|string, non\\-empty\\-array\\> in isset\\(\\) always exists and is not nullable\\.$#"
+			count: 2
+			path: app/code/core/Mage/ImportExport/Model/Export/Entity/Product.php
+
 		-
 			message: "#^Variable \\$collection might not be defined\\.$#"
 			count: 1