Requirements

Softwares

• 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