<?
// Get arguments
$p = (isset($_GET['p'])) ? $_GET['p'] : '';
$w = (isset($_GET['w'])) ? $_GET['w'] : '';
$h = (isset($_GET['h'])) ? $_GET['h'] : '';

header("Content-type: image/jpeg");

// Create image object from source image
$srcImg = imagecreatefromjpeg($p);

// Get size of image on disk
$width = imagesx($srcImg); // image width
$height = imagesy($srcImg); // image height

// Resize if new size specified -- if height given, height overrides width
if (($h > 0 && $h != $height) || ($w > 0 && $w != $width))
{	// calc proportional dimension based upon what's given
	if ($h > 0)
		$w = round((0.5 + ($h * $width)) / $height);
	else
		$h = round((0.5 + ($w * $height)) / $width);
	// resize
	$destImg = imagecreatetruecolor($w, $h);
	imagecopyresized($destImg,$srcImg,0,0,0,0,$w,$h,$width,$height);
	imagejpeg($destImg);
}
else
	imagejpeg($srcImg);
exit;
?>