I am trying to add a div to my sidebar and I only want this block to show to administrators. How can I check if a user is an administrator in php? I am trying to add this to mys
The code in the answer by *blackops_programmer* checks whether the user can protect pages. Per default, that would be sysops, but the permission can be assigned or removed from any group.
If what you want to do depends on the right to protect pages, then checking the permission is the correct way (except you should use $this->getUser(), not $wgUser). However, if you really want to check for the sysop group, use this:
if ( in_array( 'sysop', $this->getUser()->getEffectiveGroups() ) {
echo 'Hello People';
}