<?php
$_array = [
'X-Powered-By: PHP/5.6.7',
'Expires: Thu, 19 Nov 1981 08:52:00 GMT',
'Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0',
'Pragma: no-cache',
'X-MW360-Cache-Expires: 1430494628',
'Content-type: text/html; charset=UTF-8'
];
echo !strpos(implode('&', $_array), 'X-MW360-Cache-Expires')."\n";
preferences:
43.43 ms | 402 KiB | 5 Q