PHP code to prevent upload of invalid image with hack script

Hi All,

Always use this code for image upload to prevent images with vulnerable scripts.

<?php

$newIm = @imagecreatefromjpeg($_FILES["image"]["tmp_name"]);
if (!$newIm) {
    // gd could not create an image from the source
    // most likely, the file was not a valid jpeg image
    header('location:userhome.php?msg=error'); // Code to direct to your home page showing error

}
else     // code to upload file
       move_uploaded_file($_FILES["image"]["tmp_name"], $target_file) or die('Error'.mysql_error());


?>