3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $_array = 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' ); var_dump( strpos(implode('&', $_array), 'X-MW360-Cache-Expires') );
Output for 4.3.0 - 7.2.0
int(158)