What kind of unexpected problems could this requirements test result in more specifically ?

[justanotherwebmaster]

However, the following warnings should be noted - you may need to ask your host to address these:

Your server has disabled a core PHP function exec via the disable_functions directive in php.ini. This may cause unexpected problems in XenForo.
Your server has disabled a core PHP function proc_open via the disable_functions directive in php.ini. This may cause unexpected problems in XenForo.
Your server has disabled a core PHP function popen via the disable_functions directive in php.ini. This may cause unexpected problems in XenForo.

Thanks.

 

[Paul B]

exec is required for XFMG and FFmpeg integration - if you don't plan to have XFMG then it's not required.

proc_open and popen are required for email delivery when using the built in PHP option - they are not required if using SMTP.

In general, we would recommend avoiding hosts who disable core functions for "security reasons".

 

[justanotherwebmaster]

So, not really critical if I dont need php option for email delivery and XFMG?

 

[Paul B]

Correct.