Unable to override the default value of "disable_functions" via global php.ini

Symptoms

• The directive disable_functions cannot be changed using the article How to disable PHP functions globally? under Plesk > Tools & Settings > PHP Settings > php_version > php.ini.

• After changing the directive disable_functions under Plesk > Domains > example.com > PHP Settings, domain's phpinfo still shows the old value.

• The configuration file /var/www/vhosts/system/example.com/etc/php.ini contains the default value:

  # grep "disable_functions" /var/www/vhosts/system/example.com/etc/php.ini
  disable_functions = "opcache_get_status"

Cause

This is Plesk bug with ID #PPPM-9216, which is planned to be fixed in one of the future product updates.

Resolution

Subscribe to this article to be notified when the bug would be fixed.
In the meanwhile it is possible to use the following workaround:

1. Connect to the server via SSH.

2. Edit file /usr/local/psa/admin/conf/panel.ini:

   CONFIG_TEXT: [php]
   settings.general.disable_functions.values[] = "opcache_get_status"
   settings.general.disable_functions.default = "opcache_get_status"

3. Run the following command:

   # plesk bin php_settings --update-all