PHP Upload

<?php
if($_POST['submit']){
    $target_path = "files/";

    $target_path = $target_path . basename( $_FILES['uploadedfile']['name']);

    if(move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $target_path)) {
        echo "The file ".  basename( $_FILES['uploadedfile']['name']).
        " has been uploaded. <a href='files'>File Listing</a>";
    } else{
        echo "There was an error uploading the file, please try again!";
    }
    echo "<hr>";
}
?>

<form enctype="multipart/form-data" action="<?php echo __FILE__; ?>" method="POST">
<input type="hidden" name="MAX_FILE_SIZE" value="100000" />
Choose a file to upload: <input name="uploadedfile" type="file" /><br />
<input type="submit" value="Upload File" name='submit'/>
</form>