http://docs.magento.com/m2/ce/user_guide/magento/system-requirements.html says PHP requirments are "PHP 5.5.x (where x is greater than 22)"
http://devdocs.magento.com/guides/v2.1/install-gde/prereq/prereq-overview.html says "You must run PHP version 5.6 or 7.0.x or later"
This is confusing as my server's highest PHP version is 5.6.27.
Can anyone clarify what the actual requirement is?
Which version is the resources checker magento-check.php for? (it just says "your server meets the requirements for Magento")
Magento 2.0 can be used with PHP 5.5 but magento 2.1 needs PHP 5.6.
On both scenarios PHP 7 is a better option.