+ if ($this->fallback) {
+ $class = $this->fallback;
+ $obj =& new $class($name, $attrs);
+ if (!is_a($obj, 'bife_fallback')) {
+ trigger_error("Class '$class' is not a BIFE_Fallback.", E_USER_WARNING);
+ }
+ $this->stack[] =& $obj;
+ } else {
+ trigger_error("Class not found '$class'.", E_USER_ERROR);
+ }