Forum

function isteacher($courseid=0, $userid=0, $includeadmin=true) {
/// Is the user a teacher or admin?
    global $USER, $CFG;
 
    if ($includeadmin and isadmin($userid)) {  // admins can do anything the teacher can
        return true;
    }
 
    if (empty($courseid)) {
        if (isadmin() or $CFG->debug > 7) {
            notify('Coding error: isteacher() should not be used without a valid course id as argument.  Please notify a developer.');
        }
        return isteacherinanycourse($userid, $includeadmin);
    }
 
    if (!$userid) {
        if ($courseid) {
            if (empty($USER->id) or empty($USER->teacher)) {
                return false;
            }
            // start of modification
            if (is_object($courseid)) {
               if (empty($courseid->id)) {
                   return false;
               }
                return !empty($USER->teacher[$courseid->id]);
            }
            // end of modification
            return !empty($USER->teacher[$courseid]);
        }
        if (!isset($USER->id)) {
            return false;
        }
        $userid = $USER->id;
    }
 
    return record_exists("user_teachers", "userid", $userid, "course", $courseid);
}