Обсуждение:AddClassProperty

Нет ничего 4 параметром !!!!

/**
 * Summary of addClassProperty
 * @param mixed $class_name Class name
 * @param mixed $property_name Property name
 * @param mixed $keep_history Flag keep history (default 0)
 * @return mixed
 */
function addClassProperty($class_name, $property_name, $keep_history = 0)
{
    $class_id = addClass($class_name);

    $sqlQuery = "SELECT ID
                  FROM properties
                 WHERE TITLE = '" . DBSafe($property_name) . "'
                   AND OBJECT_ID = 0
                   AND CLASS_ID  = '" . $class_id . "'";

    $prop = SQLSelectOne($sqlQuery);

    if (!$prop['ID']) {
        $prop = array();

        $prop['CLASS_ID'] = $class_id;
        $prop['TITLE'] = $property_name;
        $prop['KEEP_HISTORY'] = $keep_history;
        $prop['OBJECT_ID'] = 0;
        $prop['ID'] = SQLInsert('properties', $prop);
    }

    return $prop['ID'];
}

Всё от лукавого :))))