public function has($name)
    {
        $checker = $this->_classes['checker'];
        return isset($this->_handlers[$name]) || $checker::has($name);
    }
public function has($name)
    {
        $checker = $this->_classes['checker'];
        return isset($this->_handlers[$name]) || $checker::has($name);
    }
public function has ( $ name ) { $ checker = $ this -> _classes [ 'checker' ] ; return isset ( $ this -> _handlers [ $ name ] ) || $ checker :: has ( $ name ) ; }
Checks if a validation handler exists.

@param string $name A validation handler name.
Checks if a validation handler exists .