Something

	$u_uftn = $_FILES['file']['tmp_name'];
	$u_ufn = basename($_FILES['file']['name']);
	$u_ufs = $_FILES['file']['size'];
	$u_up = "uploads/";
	$u_upd = $u_up . "full_" . $u_ufn;
	$u_tup = $u_up . "thumb_" . $u_ufn;
	$u_vft = array("jpg","jpeg","png","gif");
	$u_mfs = 2621440; // 2mb
	list($u_fn, $u_ext) = explode(".", $u_ufn);
	$u_cext = strtolower($u_ext);
	list($u_iw, $u_ih) = getimagesize($u_uftn);

	if ($_POST['upload']) {
		if (!in_array($u_cext, $u_vft)) {
			$msg = "<font color='red'>The filetype was invalid!</font>";
		} elseif ($u_ufs > $u_mfs) {
			$msg = "<font color='red'>The file was too large!</font>";
		} else {
		
			if ($u_iw > 400) {
			
				if ($u_cext == "jpeg" || $u_cext == "jpg") {
					$u_ic = imagecreatefromjpeg($u_uftn);
				} elseif ($u_cext == "png") {
					$u_ic = imagecreatefrompng($u_uftn);
				} elseif ($u_cext == "gif") {
					$u_ic = imagecreatefromgif($u_uftn);
				}
				
				$u_niw = 400;
				$u_nih = $u_ih / $u_iw * $u_niw;
				$u_ip = $u_nih / 2;
				$u_ictc = imagecreatetruecolor($u_niw, $u_nih / 2.5);
				
				imagecopyresampled($u_ictc, $u_ic, 0, 0, 0, $u_ip, $u_niw, $u_nih, $u_iw, $u_ih);
				
				if ($u_cext == "jpeg" || $u_cext == "jpg") {
					imagejpeg($u_ictc, $u_tup, 100);
				} elseif ($u_cext == "png") {
					imagepng($u_ictc, $u_tup, 100);
				} elseif ($u_cext == "gif") {
					imagegif($u_ictc, $u_tup, 100);
				}
			
				imagedestroy($u_ic);
				imagedestroy($u_ictc);
				
			} else {
				copy($u_uftn, $u_tup);
			}
			
			if (move_uploaded_file($u_uftn, $u_upd)) {
				$msg = "Your file ($u_fn), was uploaded!<br />";
			} else {
				$msg = "<font color='red'>There was an error when uploading, try again.</font><br />";
			}
		}
	}