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How to manage the PHP variable "max_input_vars" in Plesk

Started by Suhitha, Mar 05, 2026, 06:22 AM

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Suhitha

Applicable to:

  • Plesk for Linux
  • Plesk for Windows


Question

How to manage the PHP variable max_input_vars in Plesk?


Answer

The variable can be set for one domain, or globally for all domains.


One Domain
   
1.Log into Plesk

2.Go to Domains > example.com > PHP

3.Add max_input_vars with the desired value to Additional configuration directives

max_input_vars = 3000
4.Press OK to save the changes

All Domains
             
1.Log into Plesk

2.Go to Tools & Settings > PHP Settings > <Desired PHP handler>

3.Switch to the php.ini tab

4.Search for max_input_vars, remove the ; in front, and enter the desired value

5.Press OK to save the changes