Thumbnails erstellen (GD-Lib 1.6)

Dieses Script erstellt ein Thumbnail! Es funktioniert aber bloss mit GD-Lib 1.6 oder höher

Script:

<?php    function createThumb($img_src, $img_width , $img_height, $des_src) {       $im = imagecreatefromjpeg($img_src);       list($src_width, $src_height) = getimagesize($img_src);       if($src_width >= $src_height) {          $new_image_width = $img_width;          $new_image_height = $src_height * $img_width / $src_width;       }       if($src_width < $src_height) {          $new_image_height = $img_width;          $new_image_width = $src_width * $img_height / $src_height;       }       $new_image = imagecreate($new_image_width, $new_image_height);       imagecopyresized($new_image, $im, 0, 0, 0, 0, $new_image_width,$new_image_height, $src_width, $src_height);       imagejpeg($new_image, $des_src. "/" .$img_src, 100);    }       $file    = "linux.jpg";    $groesse = "100";    createThumb($file, $groesse, $groesse, "thumbnails");    echo "<a href=".$file." target=_blank><img src=thumbnails/".$file." border=0></a>"; ?>