How to Change PHP Memory Limit in HestiaCP

Prerequisites

Before changing PHP memory limit, make sure you have:

• SSH access to your VPS
• Root or sudo privileges

What is PHP Memory Limit?

Memory limit controls the maximum amount of RAM a PHP script can use. When exceeded, the script stops with "Allowed memory size exhausted" error.

Method 1: Edit php.ini

For PHP 8.2 FPM:

nano /etc/php/8.2/fpm/php.ini

Change:

memory_limit = 256M

Also update CLI:

nano /etc/php/8.2/cli/php.ini

Method 2: Change via .htaccess (Apache)

php_value memory_limit 256M

Method 3: Change via .user.ini (Nginx/FPM)

nano /home/admin/web/example.com/public_html/.user.ini

Add:

memory_limit = 256M

Method 4: Change per Script

ini_set('memory_limit', '256M');

Restart PHP-FPM

systemctl restart php8.2-fpm

Recommended Memory Limits