The phpMyAdmin that ships with MAMP Pro is now seriously out of date, so you’ll probably want to upgrade to the latest version. You can do this in a couple of easy steps. Firstly, download and uncompress the latest version of phpMyAdmin. I did it to my Desktop. Then, open up Terminal and enter the MAMP Pro folder and rename (best to rename rather than delete) the current phpMyAdmin.
cd /Library/Application\ Support/MAMP\ Pro/
mv phpMyAdmin phpMyAdminBackup
Next, copy in the new version of phpMyAdmin.
cp /Users/you/Desktop/phpMyAdmin-x.x-all-languages ./phpMyAdmin
Finally, you need to set up the configuration for the new phpMyAdmin.
cp config.sample.inc.php config.inc.php
Change the authentication type and add a username and password entry to the file.
$cfg['Servers'][$i]['auth_type'] = 'config';
$cfg['Servers'][$i]['user'] = 'root';
$cfg['Servers'][$i]['password'] = 'root';
If you’ve changed the MySQL root password on your MAMP Pro, you’ll need to enter the new password instead.
Once done, save the file and you’re done.