PHP Memory_Limit and Its Impact on WordPress Speed

Harness the Power of PHP Memory_Limit to Boost Your WordPress Performance

In today’s fast-paced digital world, having a swift and responsive website is crucial for user satisfaction and search engine optimization (SEO). One of the key aspects of WordPress performance is the PHP memory_limit setting. In this blog post, we’ll explore how PHP memory_limit affects your WordPress website speed, and what you can do to optimize it for better performance and SEO.

Section 1: Understanding PHP Memory_Limit

1.1 What is PHP Memory_Limit?

PHP memory_limit is a configuration setting that determines the maximum amount of memory a PHP script can consume. It is designed to prevent poorly written scripts from consuming excessive server resources and causing performance issues.

1.2 How PHP Memory_Limit Works with WordPress

WordPress is built using PHP, a popular scripting language used for web development. As such, the PHP memory_limit setting directly impacts the performance of your WordPress website. The more memory a WordPress site has access to, the faster it can process and execute scripts, leading to faster page load times and a better overall user experience.

Section 2: The Connection between PHP Memory_Limit and WordPress Speed

2.1 Why PHP Memory_Limit Matters

When a WordPress site has a low PHP memory_limit, it can cause slow page load times, errors, and even site crashes. By increasing the PHP memory_limit, you provide more resources for your site to work with, allowing it to process scripts more efficiently and improving site performance.

2.2 Signs Your WordPress Site Needs More Memory

Some indicators that your site could benefit from a higher PHP memory_limit include:

  • Slow page load times
  • Frequent “500 Internal Server Errors”
  • “Fatal Error: Allowed memory size exhausted” error messages

Section 3: How to Increase PHP Memory_Limit for Your WordPress Site

3.1 Check Your Current PHP Memory_Limit

Before you begin, it’s essential to know your current PHP memory_limit setting. You can do this by:

  1. Creating a phpinfo.php file in your WordPress root directory containing the following code: `<?php phpinfo(); ?>`
  2. Accessing the file through your browser (e.g.,
  3. Locate the “memory_limit” value in the “Core” section

3.2 Ways to Increase PHP Memory_Limit

There are several methods to increase your PHP memory_limit:

  • Edit your php.ini file: Find the “memory_limit” line, increase the value, and save the changes. If you don’t have access to this file, contact your hosting provider.
  • Modify the .htaccess file: Add the following line to your .htaccess file in your WordPress root directory: `php_value memory_limit [NewValue]M`
  • Update your wp-config.php file: Add the following line to your wp-config.php file in your WordPress root directory: `define(‘WP_MEMORY_LIMIT’, ‘[NewValue]M’);`

Note: Replace [NewValue] with the desired memory limit value in megabytes (e.g., 256M).

4.1 Ideal PHP Memory_Limit Values

There is no one-size-fits-all solution for the ideal PHP memory_limit value, as it depends on factors such as your site’s complexity, traffic, and hosting environment. However, a general recommendation is to set the PHP memory_limit between 256M and 512M for optimal performance. If using things like Divi, Elementor Pro, or Beaver Builder your limit may want to be between 512M and 1024M with as high as 2048M depending on the additional plugins and size of the website.


In conclusion, optimizing your PHP memory_limit setting can significantly impact your WordPress site’s speed, performance, and overall user experience. By understanding how PHP memory_limit works, identifying signs that your site needs more memory, and implementing the appropriate adjustments, you can ensure a faster, more efficient, and more SEO-friendly website.

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