public userGroupsChanged(
&$gm
object ,
$uid
string ,
&$oldg
array ,
&$newg
array );This method is invoked whenever a users groups have changed.
$gm
The GroupMod object.
$uid
The User ID the change applies to.
$oldg
Array of what the old gid's were.
$newg
Array of the gid's that are added.