Mine

<?php$image = $_GET['image'];$newWidth = $_GET['width'];$size = GetImageSize($image);$width = $size[0];$height = $size[1];$newHeight = $height * $newWidth;$newHeight = $newHeight / $width;$src = ImageCreateFromJpeg($image);$thumb = ImageCreateTrueColor($newWidth,$newHeight);imagecopyresampled($thumb, $src, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);header('Content-type: image/jpeg');ImageJpeg($thumb, null, 80);ImageDestroy($src);ImageDestroy($tmb);ImageDestroy($thumb);?>