[PHP] Simple Script File Get Contents

<form method="POST">
<input type="text" name="url" value="http://">
<input type="submit" name"anu" value="comot">
</form>

<?php
if(isset($_POST['anu'])){
$target = $_POST['url'];
$ambil = file_get_contents($target);
$tulis = fopen('newfile.php', 'w');
fwrite($tulis,$ambil);
fclose($tulis);
}
?>