Correct PHP version to prevent log error warnings (access array offset)

[rmeissn]

I have a lot of "Trying to access array offset on value ..." in my Nextcloud logs, marked as level "Error". I searched Github a lot and and it seems to be some kind of Nextcloud ~bug when using PHP >7,2 (maybe only >7.3, not sure yet). See nextcloud/server#19010 (comment)

These "Trying to access array offset on value ..." are vary annoying as these messages spam the log file a lot. It seems to be some kind of upstream issue, that the developers won't fix in the near future - at least I interpreted their comments in this way.

It might be better to use PHP 7.2 oder 7.3 for your images, instead of 7.4, in order to get rid of these messages until a upstream fix is in place.

[hoellen]

Do the errors have negative effects? I would rather see the errors fixed upstream. The coming version Nextcloud 20 will require PHP 7.3+

[rmeissn]

Aside from quite large log files, that must be filtered from these kind of error messages, there are no negative effects.

[rmeissn]

The commit 5f65a6a fixes the excessive logging behaviour for NC 19