3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $mxr = getmxrr("dailynewsgroup.com", $hosts); echo($mxr."\n"); var_dump($hosts);
based on fmNiG
Output for 4.3.0 - 5.6.28, 7.0.0 - 7.1.0
array(0) { }
Output for hhvm-3.10.0 - 3.12.0
NULL