PHP script execution mode
This option determines if PHP scripts are run as the Apache web server user
(typically httpd or apache), or the Unix user who owns
the virtual server. The former is faster as it means that no additional
processes need to be started to execute PHP code, but less secure as scripts
read and write files as a user other than the domain owner.
If your system supports it, the FCGId option is the best, as it runs
PHP scripts quickly and as the domain owner. Otherwise, unless your system is
heavily loaded or security between users is not an issue, the
CGI wrapper option is recommended.