SLES 11 SP2 ships php5.3 binaries but the default package php5 still installs php5.2 which already has reached upstream end of life and should be considered unsupported by any means. Recent versions of phpunit and other developer tools won’t provide all features on php5.2 any more.
You must use apache2-mod_php53, php53, php53-mysql and so on if you want to use php on SLES.