GDlib udskriver tekst

Jeg har hentet et Resize script her:
http://www.netcoders.dk/sources.asp?mode=view_source&tech_id=2&forum_type=1&id=1800

Og gør brug af funktionen example.rezise.php:

    # include the imageresize() and imagethumbnail() classes
    include("class.imageresize.php");

    # instantiate the class imageresize()
    $rz = new imageresize();

    # set source image to "test.jpg"
    $rz->source("test.jpg");

    # set width to 300. maintain aspect ratio is default true, so height will be adjusted automatically.
    $rz->new_width = 300;

    # resize the image and output it directly to the browser
    $rz->resize();


Det der så sker er, at den udskriver en masse tegn.. Hvad kan dette skyldes?

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