GifCreator doesn't work

[BartTotal]

Hi
I tryed your GifCreator. It doesn't give any reaction or image. Not even a Error:

<?php
use GifCreator\GifCreator as GifCreator;


require_once('GifCreator.php');



// Create an array containing file paths, resource var (initialized with imagecreatefromXXX), 
// image URLs or even binary code from image files.
// All sorted in order to appear.
$frames = array("image_1.png", "image_2.png");

// Create an array containing the duration (in millisecond) of each frames (in order too)
$durations = array(40, 80);

// Initialize and create the GIF !
$gc = new GifCreator();
$gc->create($frames, $durations, 5);

?>