Do you see an error message in WordPress that the allowed memory size is exhausted?

This is one of the most common WordPress errors, and you can easily fix it by increasing the PHP memory limit in WordPress.

In this article, we will show you how to fix WordPress exhaustion errors by increasing PHP memory limits.

What is a WordPress memory exhaustion error?

WordPress is written in PHP, a server-side programming language. Additionally, each website requires a WordPress hosting server to function properly.

A web server is like any other computer. They require a certain amount of memory to run multiple applications efficiently at the same time. Server administrators allocate specific memory sizes to different applications, including PHP.

When your WordPress code requires more memory than the default allocated memory, you will see the following error message:

Fatal error: Allowed memory size 33554432 bytes in line xxx/home4/xxx/public_html/wp-includes/plugin.php has exhausted (try to allocate 2348617 bytes)

If your WordPress website experiences the following situations, it may run out of server memory:

• A large number of images, videos and other types of media
• A large number of unused WordPress plugins
• Its hosting plan resources can no longer meet the needs

By default, if the PHP memory limit is less than 64MB, WordPress automatically tries to increase the limit. However, 64MB is usually not high enough.

Having said that, let's see how to easily increase PHP memory limits in WordPress to avoid memory exhaustion errors.

How to increase PHP memory limit in WordPress

There are several ways to increase PHP memory limits. One is to edit the wp-config.php file, the other is to adjust the .htaccess file, and the last method is to check the php.ini file.

Let's discuss it one by one:

Edit the wp-config.php file

First, you need to edit the wp-config.php file on your WordPress website. It is one of the core WordPress files in the root directory of a WordPress website, usually called public_html.

You need to use an FTP client or file manager such as FileZilla in the web hosting control panel.

Next, you need to paste the following line before the following line in the wp-config.php file: That's all, stop editing! Happy blogging.

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

Depend on

Use it with one click in WordPress

This code tells WordPress to increase the PHP memory limit to 256MB.

For more details, see a step-by-step guide on how to find and edit wp-config.php files.

Once done, you need to save the changes and upload the wp-config.php file back to the server.

You can now access your WordPress website and the memory exhaustion error should have gone away.

Edit .htaccess file

The next method is to edit the .htaccess file. This file is also located in the root folder of the WordPress website.

Here you need to paste the following code into the displayed line before #END WORDPRESS.

 php_value memory_limit 256M

Depend on

Use it with one click in WordPress

Similar to the previous code, it will tell WordPress to increase the PHP memory limit to 256MB.p

After that, just save the changes and upload the file back to your web server. You can now open the WordPress website again to see if the memory limit error has disappeared.

If you can't find a .htaccess file, check out our guide to why the .htaccess file might be lost and how to find it.

Check your php.ini file

If the above method does not work, you may want to view the php.ini file.

php.ini is a file that controls PHP settings, including PHP versions and PHP scripts. It is not a WordPress core file, because your hosting provider will usually manage it.

You can check its code to see your PHP memory usage limits. For more details, you can refer to our guide on how to find and edit php.ini files.

However, since this is an advanced approach, we recommend that you contact the support team of your web hosting provider to see if they can manually increase WordPress memory limits. Otherwise, this may lead to further errors.

We hope this article helps you resolve WordPress memory exhaustion errors by increasing PHP memory limits. You may also want to check out our step-by-step beginner's guide to fixing WordPress errors, and our expert picks of the best WordPress plugins to extend your website.

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