To enable the php-5.4 module please create a symbolic link from
/var/www/conf/modules.sample/php-5.4.conf to
/var/www/conf/modules/php.conf. As root:

    ln -sf /var/www/conf/modules.sample/php-5.4.conf /var/www/conf/modules/php.conf

The recommended php configuration has been installed to:
    /etc/php-5.4.ini.
