Fatal error: Allowed memory size

Hello Benny,
I have written a short guide on how to approach this in the documentation: Solving Memory Issues

let me know if you have any questions after this!
Ewout

I followed your steps in the short guide.

But won’t the edited “default-constants.php” be overwritten with the next WP update?

I also used these instructions and created a .user.ini in my root.
(https://ca.godaddy.com/help/php-upload-limits-on-shared-hosting-1475)

Thank you

Hello Benny,
The instructions from my link advise to use the config.php file, which overrides the default-constants.php. Indeed you shouldn’t edit core files.

Depending on your server settings, the php upload limit may or may not be overriden by WordPress, so it’s good to set both. This should be reflected in the error (as described in my link).

Ewout

Thank you Ewout. Changing the default-constants.php seems to be the only thing that effects the change.

When you says “use the config.php file”. There isn’t a config.php present anywhere in my root. Do you mean the wp-config.php? If so, won’t that get written over with updates?

Thank you for your help on this.

Hello Benny,
That’s correct. WP settings/configs are never overwritten on updates, otherwise it would also lose its DB connection for example :).

For completeness sake, I’ll copy paste the relevant sections from the link:

Editing wp-config.php
One of the most important files in your WordPress installation is the wp-config.php file. This file is located in the root of your WordPress file directory and contains your website’s base configuration details, such as database connection information.

[…]

Also released with Version 2.5, the WP_MEMORY_LIMIT option allows you to specify the maximum amount of memory that can be consumed by PHP. This setting may be necessary in the event you receive a message such as “Allowed memory size of xxxxxx bytes exhausted”.

This setting increases PHP Memory only for WordPress, not other applications. By default, WordPress will attempt to increase memory allocated to PHP to 40MB (code is at the beginning of /wp-includes/default-constants.php) for single site and 64MB for multisite, so the setting in wp-config.php should reflect something higher than 40MB or 64MB depending on your setup.

[…]

Increase PHP Memory to 96MB

define( 'WP_MEMORY_LIMIT', '96M' );

Administration tasks require much memory than usual operation. When in the administration area, the memory can be increased or decreased from the WP_MEMORY_LIMIT by defining WP_MAX_MEMORY_LIMIT.

define( 'WP_MAX_MEMORY_LIMIT', '256M' );

Please note, this has to be put before wp-settings.php inclusion.

I personally recommend 128M or more for the WP_MEMORY_LIMIT.

Thank you for this. Awesome support!

You’re welcome ??

Let me know if you have any other questions and have a great day!

Ewout

i get the same problem…
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 72 bytes) in /home/sindorayaco/public_html/wp-includes/wp-db.php on line 2413

ive tried to change
// Define memory limits.
if ( ! defined( ‘WP_MEMORY_LIMIT’ ) ) {
if ( false === wp_is_ini_value_changeable( ‘memory_limit’ ) ) {
define( ‘WP_MEMORY_LIMIT’, $current_limit );
} elseif ( is_multisite() ) {
define( ‘WP_MEMORY_LIMIT’, ’64M’ );
} else {
define( ‘WP_MEMORY_LIMIT’, ’40M’ );
}

into 96m and 128m uut didnt worrk,
ive tried to add define……… into httacces too, but didnt work also.

Hi! As described above, you should never edit core WordPress files. The Memory Limit should be changed in wp-config.php. Read a few posts up for more information. The error shows that it’s still set at 64M.

sorry, i cant find WP_MEMORY_LIMIT or WP_MAX_MEMORY_LIMIT in wp-config.php

should i add //define memory limit in wp-config.php?
where should i add, if i have to do that?

ive tried to add define( ‘WP_MAX_MEMORY_LIMIT’, ‘256M’ ); or define(‘WP_MEMORY_LIMIT’, ‘966M’); before HAPPY BLOGGING
as the same result… didnt change anything…

• This reply was modified 7 years, 10 months ago by ahhvj.
• This reply was modified 7 years, 10 months ago by ahhvj.

https://docs.woocommerce.com/document/increasing-the-wordpress-memory-limit/

ive tried to add define( ‘WP_MAX_MEMORY_LIMIT’, ‘256M’ ); or define(‘WP_MEMORY_LIMIT’, ‘966M’); before HAPPY BLOGGING
as the same result… didnt change anything…

before this error, ive got the same error, and i just need to refresh the browser

• This reply was modified 7 years, 10 months ago by ahhvj.

Then either your server is limited to 64M or PHP is limited to 64M. I recommend contacting your host, they should be able to help.