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PHP errors in cPanel phpMyAdmin

  • Updated on Jul 7, 2026
  • Published on Apr 7, 2026
  • 1 minute(s) read
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phpMyAdmin on cPanel uses a separate php.ini file to what cPanel accounts and the system uses. 

Sometimes you may get an error using phpMyAdmin caused by a constant within the PHP configuration. One such constraint is the 50MB SQL file upload limit.

To check if it's causing an error, you can check the cPanel log located at:

/usr/local/cpanel/logs/error_log

You might see something like this:

PHP Warning: Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0
PHP Warning: Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in Unknown on line 0

If you see errors like this. You can alter the php.ini that phpMyAdmin sees to better suit your needs. The file that is referenced by phpMyAdmin is located at:

/usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini

Please note:

This should not be editted directly. The way to alter this php.ini config file is via WHM → Server Configuration → Tweak Settings, as that is where this file is generated from.