XF 2.1 For what "exec" and "proc_open" are used by Xenforo?

[alsoGAMER]

I own a vps with this and more other functions disabled using php.ini and i would to know for what are used

 

[Ozzy47]

exec is required for XFMG and FFmpeg integration.

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

 

[alsoGAMER]

I'm using image optimizer from @ThemeHouse, keeping "exec" disabled is a problem in order to run "pngquant" and "jpegoptim"?

 

[Ozzy47]

You would need to ask them.