Your server meets all of XenForo's PHP requirements.
However, the following warnings should be noted - you may need to ask your host to address these:
exec
via the disable_functions
directive in php.ini. This may cause unexpected problems in XenForo.proc_open
via the disable_functions
directive in php.ini. This may cause unexpected problems in XenForo.popen
via the disable_functions
directive in php.ini. This may cause unexpected problems in XenForo.