How to change/customize PHP settings?

Question

How to change/customize PHP settings?

Answer

It is possible to configure the following parameters: 

• Performance settings
  • memory_limit
  • max_execution_time
  • max_input_time
  • post_max_size
  • upload_max_filesize
• Common settings
  • include_path
  • session.save_path
  • mail.force_extra_parameters
  • open_basedir
  • error_reporting
  • display_errors
  • log_errors
  • allow_url_fopen
  • file_uploads
  • short_open_tag
• PHP-FPM settings
  • pm.max_children
  • pm.max_requests
  • pm
  • pm.start_servers
  • pm.min_spare_servers
  • pm.max_spare_servers
• Additional directives: specific custom settings for a particular subscription/service plan.

• To set PHP setting for a particular domain go under Subscriptions > example.com > PHP Settings.
  
  
• To set PHP setting for a service plan go under Service Plans > plan_name > PHP Settings.
  Created subscriptions will inherit the PHP settings from its service plan.
  
  
• To set PHP setting globally go under Tools & Settings > PHP Settings > PHP handler > php.ini.

  Note: settings on domain level override directives in php.ini file.

  

Additional information

How to apply PHP-FPM pool settings for all the domains?

How to change PHP-FPM pool settings for a domain in Plesk?