You may want to do this for several reasons all concerning the security of your website. Let’s see how you can rename the ‘admin‘ folder without breaking PHP Melody.
Open /config.php and find this line:
Replace the ‘admin‘ value with your new folder name (e.g. admin2015). Edit only the underlined bit. Make sure there are no empty spaces between the single quotes.
Save and upload /config.php to your installation.
Rename your ‘admin‘ folder to match the new folder name (i.e. admin2015).
That’s it. Job done!