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_logYou 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 0If you see errors like this. You can alter the php.ini that phpMyAdmin ses to better suit your needs. The file is located at:
/usr/local/cpanel/3rdparty/etc/phpmyadmin/php.ini