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WordPress Fatal error: Allowed memory size exhausted

Memory allocation and exhaustion problems within WordPress installations.
By default, our servers allow up to 32MB of data to be transferred via PHP. Not having enough memory can result in errors that look similar to this one:

            Fatal error: Allowed memory size of 33554432 bytes exhausted (tried to allocate 2515174 bytes) in /path/to/wordpress/file.php on line 1331 
            

Before we get started, it is important to understand which of the three PHP settings you are using for your hosting account. Please see this article to learn how to check your PHP settings.

If using "PHP5 (Single php.ini)" or "PHP5 (FastCGI)", simply locate the "php.ini" file inside "public_html/" directory; for the standard "PHP5" setting, make a copy of the php.ini file first and place it in the "wp-includes/" directory. If the php.ini file cannot be located, a new php.ini.default file can be created via the cPanel PHP Config icon. Be sure to rename the file to php.ini, it will not function while named php.ini.default.

Within the php.ini file, modify the "memory_limit" value. The php.ini file can be edited with any text editor, including the "Edit" or "Code Edit" option within your HostMonster File Manager. With the file open, search (ctrl+f) for memory_limit or scroll down to approximately line 232. Here you should see the following line:

            memory_limit = 32M      ; Maximum amount of memory a script may consume (32MB)

Simply update this number to accommodate for a higher amount of memory; we suggest setting the value as "64M," as this fulfills most common requirements. Be sure to save any changes. Next, open the file wp-settings.php (located within the directory where WordPress is installed). Near the top of this file look for:

            define('WP_MEMORY_LIMIT', '32M');
            
Update this value to the new memory limit as well. Save changes to the file. Once the file is saved, the effect should be immediate.

Note: To check and see that the memory_limit has been updated properly, create a new text file called info.php within the same directory you edited your new php.ini file. Create this new file and add the following code:

            <?php phpinfo() ;?>
            

Then view this page in a browser (be sure to include the directory in the URL if this is where you placed the info.php file). The PHP settings including the memory_limit should have changed. This will also show the path to the php.ini file which is being used.

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