Install PHP and apache library.
sudo apt-get install php5 libapache2-mod-php5
Install MySQL server, client and php library.
sudo apt-get install mysql-server mysql-client php5-mysqlIt will ask you a root password during the installation wizard. Remember it!
MySQL admin page
To easy manage the DB download "phpMyAdmin" from its site and extract it in /var/www/admin folder.
Restart the raspi.
Now you can control the DB from http://your.address/admin with MySQL root user and password.