phpMyAdmin has problems when working with large Mysql database imports. If you are getting the following error try following the steps below to fix it.

Fatal error: Maximum execution time of 300 seconds exceeded with phpMyAdmin

Locate your phpMyAdmin folder and find the file: config.default.php.
I am currently working with XAMPP and the following file can be located: C:\xampp\phpMyAdmin\libraries\config.default.php
Once you have this open in a text editor located this line of code:

$cfg['ExecTimeLimit'] = 300;

and replace it with:

$cfg['ExecTimeLimit'] = 3500;

This will add additional time! Save the file and upload you sql file.