StringyHelper

<?php
App::uses('AppHelper', 'View/Helper');

class StringyHelper extends AppHelper {
   
   /**
    * Call any Stringy method with the given arguments
    *
    * @return mixed
    */
   public function __call($method, $arguments) {
        return call_user_func_array("\Stringy\Stringy::$method", $arguments);
    }
}

danke :)