I just learn to setup AMP on centos. Below are the steps

• Download a copy of CentOS Linux and install it
• Once your CentOS is installed. type yum install httpd to install apache web server
• type yum install php to install PHP
• Once PHP installed successfully, type yum install mysql-server mysql
• Once everything finish, type service httpd start to start your apache web server, screen will show you if web server service successfully started
• type service mysqld start to start your mysql server
• Once both services is running, you can point your browser to http://localhost and you should see a welcome page from CentOS
• To test php is running properly, go to /var/www/html and create an index.php file with the content below