Get PHP Memory Limit Value

When working with PHP, understanding the memory limit set for the scripts can be critical for ensuring smooth performance and avoiding unexpected memory-related errors. PHP's memory_limit directive specifies the maximum amount of memory a script is allowed to allocate, and it can significantly impact the scalability and stability of the application. This tutorial explains how to get PHP memory limit value.

The ini_get function in PHP is used to retrieve the value of a configuration option. By passing memory_limit as a parameter, it fetches the value of the memory limit directive defined in the PHP configuration file (php.ini).

<?php

$memoryLimit = ini_get('memory_limit');
echo $memoryLimit;

If the memory_limit is set to 128M in the php.ini file, the output of the script will be:

128M

If the code returns -1, it indicates that there is no memory limit.