XF 1.2 XenForo Required PHP Settings/Extensions


Well-known member
Today my host has provided an option wherein we can choose what php version we wish to run along with settings/extensions. I'm not much knowledgeable in this field, we are currently running on php version 5.3 according to my host, my first question would be, should I upgrade/select 5.4? If yes, what settings/extensions are required by XenForo? I've attached screenshots below that show you what I have to play with.