Choose which PHP settings can be edited by end-customer
For now the ability to forbid managing PHP settings is configured via permission in service plan. However, it is not possible to configure permission for some particular parameter (for example open_basedir). Please add this feature. There is already declined one with 3 votes https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/16470508-choose-which-php-settings-can-be-edited-by-end-cus

Thank you for your input. We will consider this functionality in upcoming releases if it is popular. Everyone, please continue voting for this feature if you consider it important.
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IG
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Anonymous commented
There should be at least a option to separately allow / disallow specific sections.
Right now, when you allow performance settings, the customer also get's access to the PHP-FPM settings which is a problem for us.