ini_set('memory_limit', ...) doesn't work and returns false; can't figure out why

php apache php-ini
Thomas Bonini picture Thomas Bonini · May 2, 2011 · Viewed 7.8k times · Source 
ini_set('memory_limit', '128M'); // Returns false; memory_limit unchanged

I wasn't able to find a list of things that can cause this. So far I checked:

  • Safe mode: disabled
  • disable_functions: Empty
  • php_admin_value: None that I could find (is there a way to know for sure?)

I ran out of ideas! ini_set works correctly with other parameters (such as "display_errors")

Answer

James C picture James C · May 2, 2011

If it's not the PHP version problem posted already try checking that there's nothing on the machine preventing your from raising this limit.

How to check whether Suhosin is installed?

edit (after establishing that Suhosin is installed):

Config details are here: http://www.hardened-php.net/suhosin/configuration.html I suspect there'll be a file in /etc/php.d/ that you can edit to increase the memory limit bounds. The config variable you need to edit is: suhosin.memory_limit

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