Increase PHP Memory Allowance Using ini_set()

Discussion

1. chuck

   I had to do this recently for a client who had joomla (yuck) installed. I just posted this in the top of their main index.php file so it was loaded on every page. It’s really good as a quickfix if you’re using something like Gallery or Joomla along with php-cgi, since php-cgi doesnt let you use htaccess.
2. Michael

   Thank you o-b-wan, both for this post, and the kindly remonstration given on the other post that sent me here.

   :)

   Michael
3. Michael

   This worked great David.

   I had to place it below some other “session_start();” code in the index2.php file of a troublesome joomla installation, but it worked just as you offered.

   memory_limit Local 16M; Master 8M

   Thanks again o-b-wan.

   Off to look for the next pebble…
   :)

   Michael
4. Sam

   I have a problem with wordpress installing plugins where I get the error:

   Fatal error: Allowed memory size of 16777216 bytes exhausted (tried to allocate 122880 bytes) in /var/virtual/web/w1032/html/wp-content/plugins/wp-postratings/wp-postratings.php on line 872
   

   Which file should I place the code in? And I obviously need to increase it past 16MB so can I just put in:

   ini_set('memory_limit','32M');  
   

   maybe wp-config.php or the actual plugin? wp-postrating.php?
5. Sam

   I cannot install plugins on wordpress due to a memory error.

   I can’t get to php.ini, which file do you know should I put

   ini_set(‘memory_limit’,’24M’)

   in?

   wp-config, the plugin script or all the wp php files?

   thanks!
6. Akshay

   @Sam: You have to put

   ini_set(’memory_limit’,'24M’);
   

   this line of code in the file/page, which on calling gives the error.
7. Tob-e

   I’ve got a strange behaviour on PHP 5.2.11.
   The php.ini set the memory_limit to 128MB. I can adjust the limit to 64M but never above the limit of 128M.

   Did someone noticed a similar problem?
8. i4ever

   I tried to install wordpress 3.0.1 and i received this message : Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2966269 bytes) in /home/blidaru/public_html/wp-includes/http.php on line 1364

   What i have to do?
• Rnel

  put this on top of your http.php file

  ini_set('memory_limit','32M');

  if that didn’t worked out try increasing 32M until it works for you
9. kishor

   ini_set('memory_limit', '-1'); will be a neat solution as well. but I am still not sure of any side effects of this!
• Chasalin

  Dangerous!

  If you happen to have any flaw in your code, this could cause your server to become unresponsive.

  Setting the memory_limit to -1 (infinite) should only be done for testing purposes on non-production machines!
• Marcos

  You really save my life!!!
  I was trying to work on local with prestashop 1.7, and nothing works for backoffice access products…
  That’s was the solution!
10. MyShadowSelf

    Life saver, as always David.

    Host of my dedicated saw fit to lower all max memory across their entire network for “security reasons”. Screw em, Big Daddy Walsh has my answer!
11. Dalinofx

    this is the best solution step by step
    http://core.trac.wordpress.org/attachment/ticket/13847/13847.patch
• Blgr3

  Tried, didn’t work…
12. Akram

    Thanks David but it didn’t work in my case – I think my host has put a limit on memory access – had an image resizing script with imagecreatetruecolor() – and script just would not go past it.
• YD

  Set the memory limit to infinity then

  ini_set('memory_limit', '-1')
13. gaurav

    set

    ini_set(“memory_limit”,”128M”);
14. berk

    Here are 3 ways on how to increase it

    http://newexception.com/php-increase-memory-limit
15. Smily Myra

    I need to put this in php.ini file or .htaccess file ?
16. Puff & Pie

    @samily .htaccess is important in main folder (public_html) not in php.ini
17. Sanjiv

    Great works I just added and it works.

    ini_set('memory_limit','32M');
18. Egon_Freeman

    Just so you know, the administrator CAN limit your ability to increase this limit! There’s such a thing called PHP Safe Mode, and in this mode you can set function calls that will NOT be executed, no matter who calls them or from where. One of these functions can be ini_set(), which would block it completely.

    You can also try setting it via .htaccess, but that doesn’t always work (it hinges on ALLOW OVERRIDES being set to something other than NONE, I believe).

    Keep that in mind. Sometimes, the only valid solution is to change your host.
19. Binh WPOS

    Hi David,

    I’m trying this right now. Somehow from php.ini it’s already 512M. In wp_config.php I also put define('WP_MEMORY_LIMIT', '512M'); but somehow it keep getting 256M.

    I decided to use the ini_set('memory_limit','1024M'); in my php file to see if it has any improvement. So far it’s not breaking due to memory limit yet.

    So thank very much for pointing this out.
20. zylstra

    “The above code will increase the maximum amount…” or decrease…
21. Mehul Vyas

    Just add this line in wp-config.php

    ini_set('memory_limit', '128M');
    ini_set('upload_max_filesize', '128M');
    ini_set('post_max_size', '128M');
    ini_set('file_uploads', 'On');
    ini_set('max_execution_time', '300');
    ini_set('file_uploads', 'On');