[SOLVED] Script doesn't do anything

[Lol5916]

<?php
$l = file_get_contents("admin/admin.php");
$s = $_POST['rand'];
$pp = str_replace("replacethis", $s, $l);
$fw = fopen("admin/admin.php", "w");
fwrite ($fw, $pp); 
fclose($fw);
copy("admin/admin2.php",$s);
unlink("admin/admin2.php");
?>

 

EDIT:Now the only thing the script doesn't do is copy and delete the file, it just deletes it.

[DarkWater]

The whole thing is wrong.  First of all, you delete admin2.php right after using copy()...(which you used wrong anyway, use file_put_contents()).