- Plesk Onyx for Linux
How to set max_input_vars server-wide on a Plesk server?
Note: If there is large number (more than 100) domains on the sever the process of applying new php.ini settings can take significant time (10 minutes or more).
Log into Plesk UI as administrator.
Open the tab Plesk > Tools & Settings > PHP settings.
Click on the required PHP version.
Open the tab php.ini.
Comment the following line and set required value, for example:
CONFIG_TEXT: max_input_vars = 3000