Ever since E-Smith was purchased by Mitel, the core OS has been updated, but all the peripheries seem to have lagged behind. As Mambo OS released their latest, it appears that ALL of the versions of Apache, PHP, MySQL are at the lowest acceptable level, with at least 4 version updates to each.
I searched for a PHP upgrade, but the one posted for 5.6 just doesn't work with 6.0. It certainly sounds like tiime for an upgrade.