public function getLdapData($matriculationNumber)
 {
     $user = array();
     //[matnr][imtLogin][LastName][FirstName]
     require_once PATH_CLASSES . "lms_ldap.class.php";
     try {
         $lms_ldap = new lms_ldap();
         $lms_ldap->bind(LDAP_LOGIN, LDAP_PASSWORD);
     } catch (Exception $e) {
         //paul_sync_log("PAUL_SYNC\t" . $e->getMessage(), PAUL_SYNC_LOGLEVEL_ERROR );
         return FALSE;
     }
     $uid = $lms_ldap->studentid2uid($matriculationNumber);
     $user["imtLogin"] = $uid;
     $ldap_attributes = $lms_ldap->get_ldap_attribute(array("sn", "givenName", "upbMailPreferredAddress"), $uid);
     $user["upbMailPreferredAddress"] = $ldap_attributes["upbMailPreferredAddress"];
     $user["firstname"] = $ldap_attributes["givenName"];
     $user["lastname"] = $ldap_attributes["sn"];
     $user["mnr"] = $matriculationNumber;
     if (!isset($user["firstname"])) {
         return FALSE;
     }
     if (!isset($user["lastname"])) {
         return FALSE;
     }
     if (!isset($user["mnr"])) {
         return FALSE;
     }
     //return ldap data
     return $user;
 }