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<?php define('DB_HOST', 'localhost:3306'); define('DB_USER', 'wscats'); define('DB_PWD', '123456789'); define('DB_CHARSET', 'UTF8'); define('DB_DBNAME', 'asm'); ?>
<?php class mysql{ /** * 连接MYSQL函数 * 连接MYSQL函数,通过常量的形式来连接数据库 * 自定义配置文件,配置文件中自定义常量,包含需要使用的信息 * @return resource */ function connect2 (){ //连接mysql $link=@mysql_connect(DB_HOST,DB_USER,DB_PWD) or die ('数据库连接失败<br/>ERROR '.mysql_errno().':'.mysql_error()); //设置字符集 mysql_set_charset(DB_CHARSET); //打开指定的数据库 mysql_select_db(DB_DBNAME) or die('指定的数据库打开失败'); return $link; } /* array( 'username'=>'cy', 'password'=>'123456', 'email'=>'[email protected]' ) */ /** * 插入记录的操作 * @param array $array * @param string $table * @return boolean */ function insert($array,$table){ $keys=join(',',array_keys($array)); $values="'".join("','", array_values($array))."'"; $sql="insert {$table}({$keys}) VALUES ({$values})"; $res=mysql_query($sql); if($res){ return mysql_insert_id(); }else{ return false; } } /** * MYSQL更新操作 * @param array $array * @param string $table * @param string $where * @return number|boolean */ function update($array,$table,$where=null){ foreach ($array as $key=>$val){ $sets.=$key."='".$val."',"; } $sets=rtrim($sets,','); //去掉SQL里的最后一个逗号 $where=$where==null?'':' WHERE '.$where; $sql="UPDATE {$table} SET {$sets} {$where}"; $res=mysql_query($sql); if ($res){ return mysql_affected_rows(); }else { return false; } } /** * 删除记录的操作 * @param string $table * @param string $where * @return number|boolean */ function delete($table,$where=null){ $where=$where==null?'':' WHERE '.$where; $sql="DELETE FROM {$table}{$where}"; $res=mysql_query($sql); if ($res){ return mysql_affected_rows(); }else { return false; } } /** * 查询一条记录 * @param string $sql * @param string $result_type * @return boolean */ function fetchOne($sql,$result_type=MYSQL_ASSOC){ $result=mysql_query($sql); if ($result && mysql_num_rows($result)>0){ return mysql_fetch_array($result,$result_type); }else { return false; } } /** * 得到表中的所有记录 * @param string $sql * @param string $result_type * @return boolean */ function fetchAll($sql,$result_type=MYSQL_ASSOC){ $result=mysql_query($sql); if ($result && mysql_num_rows($result)>0){ while ($row=mysql_fetch_array($result,$result_type)){ $rows[]=$row; } return $rows; }else { return false; } } /**取得结果集中的记录的条数 * @param string $sql * @return number|boolean */ function getTotalRows($sql){ $result=mysql_query($sql); if($result){ return mysql_num_rows($result); }else { return false; } } /**释放结果集 * @param resource $result * @return boolean */ function freeResult($result){ return mysql_free_result($result); } /**断开MYSQL * @param resource $link * @return boolean */ function close($link=null){ return mysql_close($link); } /**得到客户端的信息 * @return string */ function getClintInfo(){ return mysql_get_client_info(); } /**得到MYSQL服务器端的信息 * @return string */ function getServerInfo($link=null){ return mysql_get_server_info($link); } /**得到主机的信息 * @return string */ function getHostInfo($link=null){ return mysql_get_host_info($link); } /**得到协议信息 * @return string */ function getProtoInfo($link=null){ return mysql_get_proto_info($link); } } ?>
<?php require_once 'function.php'; require_once 'config.php'; $db = new mysql(); $link = $db->connect2(); //var_dump($link); $sql='SELECT * FROM news'; $rows = $db->fetchAll($sql); //var_dump($rows); echo json_encode($rows); ?>
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配置参数
操作数据库方法
示例
The text was updated successfully, but these errors were encountered: