Bewegende Gif upload

<?php




function resize($width, $height){
	/* Get original image x y*/
	list($w, $h) = getimagesize($_FILES['image']['tmp_name']);
	/* calculate new image size with ratio */
	$ratio = max($width/$w, $height/$h);
	$h = ceil($height / $ratio);
	$x = ($w - $width / $ratio) / 2;
	$w = ceil($width / $ratio);
	/* new file name */
	$check_user_details = mysql_query("select * from `gebruikers` where `email` = '".mysql_real_escape_string($_SESSION["VALID_USER_ID"])."'");
$get_user_details = mysql_fetch_array($check_user_details);
$sid = strip_tags($get_user_details['serverid']);
$name = rand() . "";
$name = rand(5, 15);
	$path = 'uploads/nonstop/'.$sid.'/'.$name.'_'.$_FILES['image']['name'];
	/* read binary data from image file */
	$imgString = file_get_contents($_FILES['image']['tmp_name']);
	/* create image from string */
	$image = imagecreatefromstring($imgString);
	$tmp = imagecreatetruecolor($width, $height);
	imagecopyresampled($tmp, $image,
  	0, 0,
  	$x, 0,
  	$width, $height,
  	$w, $h);
	/* Save image */
	switch ($_FILES['image']['type']) {
		case 'image/jpeg':
			imagejpeg($tmp, $path, 100);
			break;
		case 'image/png':
			imagepng($tmp, $path, 0);
			break;
		case 'image/gif':
			imagegif($tmp, $path);
			break;
		default:
			exit;
			break;
	}
	return $path;
	/* cleanup memory */
	imagedestroy($image);
	imagedestroy($tmp);
}
// settings
$max_file_size = 1024*200; // 200kb
$valid_exts = array('jpeg', 'jpg', 'png', 'gif');
// thumbnail sizes
$sizes = array(150 => 150);


if ($_POST['uper'] AND isset($_FILES['image'])) {
	if( $_FILES['image']['size'] < $max_file_size ){
		// get file extension
		$ext = strtolower(pathinfo($_FILES['image']['name'], PATHINFO_EXTENSION));
		if (in_array($ext, $valid_exts)) {
			/* resize image */
			foreach ($sizes as $w => $h) {
				$files[] = resize($w, $h);
			}


		} else {
			$msg = 'Unsupported file';
		}
	} else{
		$msg = 'Please upload image smaller than 200KB';
	}
}
?>