Skip to main content



  • PHP 8.1 or higher
  • Database (eg: MySQL, PostgreSQL, SQLite)
  • Redis 6.2 or higher
  • Web Server (eg: Apache, Nginx, IIS)
  • URL Rewrite (eg: mod_rewrite for Apache)
  • Supervisor
  • FFmpeg
  • Curl
  • Zip
  • Unzip
  • Cron

PHP extensions

  • php-curl
  • php-mysql
  • php-bcmath
  • php-gd
  • php-mbstring
  • php-redis
  • php-xml
  • php-zip
  • php-intl

These extensions are version-specific for PHP, so if you have PHP 8.2.x installed you would run:

sudo apt install php8.2-curl php8.2-mysql php8.2-bcmath php8.2-gd php8.2-mbstring php8.2-redis php8.2-xml php8.2-zip php8.2-intl

In Plesk, you can install or upgrade PHP via "Tools & Settings -> Plesk -> Updates"

Enabling Specific PHP Functions

In PHP, certain functions are disabled by default for security reasons. To utilize these functions, you need to modify the disable_functions directive in the php.ini file. This guide will walk you through enabling the pcntl_signal and pcntl_alarm functions, which are commonly disabled.

Example before editing:

disable_functions = pcntl_alarm, pcntl_signal, exec, shell_exec

Example after editing:

disable_functions = exec, shell_exec