<?
if (!isset($_GET["image"])) die();
$image = $_GET["image"];

$imagewidth = $imageheight = 0;
// check if the $image string has a .jpg or .gif or .png
$ext = substr(strtoupper($image), -3, 3);
if ($ext!='JPG' && $ext!='GIF' && $ext!='PNG') {
	die('File extension is not suppoted. Supported extension are: jpg, gif, png.');
}

list($w, $h, $type, $attr) = getimagesize($image);

if (isset($_GET["width"]) || isset($_GET["height"]))
{
	$ratio = $_GET["width"]/$w;	
	if ($_GET["width"] >0) $imagewidth = $_GET["width"];
	if ($_GET["height"]>0) $imageheight = $_GET["height"];
	if ($imagewidth == 0) $imagewidth = ($w*$ratio);
	if ($imageheight == 0) $imageheight = ($h*$ratio);
}
else
{
	$imagewidth = $w;
	$imageheight = $h;
}

switch($type)
{
	case 1:
		$im = @imagecreatefromjpeg($image); /* Attempt to open */
		$thumb = imagecreatetruecolor($imagewidth, $imageheight);
		imagecopyresampled($thumb, $im, 0, 0, 0, 0, $imagewidth, $imageheight, $w, $h);
		header("Content-Type: image/gif");
		imagegif($thumb);
	break;

	case 2:
		$im = @imagecreatefromjpeg($image); /* Attempt to open */
		$thumb = imagecreatetruecolor($imagewidth, $imageheight);
		imagecopyresampled($thumb, $im, 0, 0, 0, 0, $imagewidth, $imageheight, $w, $h);		
		header("Content-Type: image/jpeg");		
		imagejpeg($thumb);
	break;

	case 3:
		$im = @imagecreatefrompng($image); /* Attempt to open */
		$thumb = imagecreatetruecolor($imagewidth, $imageheight);
		imagecopyresampled($thumb, $im, 0, 0, 0, 0, $imagewidth, $imageheight, $w, $h);		
		header("Content-Type: image/png");
		imagepng($thumb);
	break;
	
}


?>