LTS is a joke
Debian 6 supported up until now? Could've fooled me. Debian 7 seems rather neglected already. Want a supported version of PHP, y'know, with the endless security patches? Compile it yourself or use a 3rd-party repo like dotdeb.org if you trust it. But that's not "support", not even "critical security support".
FreeBSD is a more pleasant sysadmin experience, with up-to-date packages for PHP 5.5 and 5.6, and even slightly obscure stuff like Solr. "pkg install x y z", configure, done.