run code in 200+ php & hhvm versions
Bugs & Features
<?php $tags = array('utm_source', 'utm_medium', 'utm_campaign'); echo $_GET foreach ($tags as $tag){ $results[] = $_GET["{$tag}"]; } print_r($result);

Here you find the average performance (time & memory) of each version. A greyed out version indicates it didn't complete successfully (based on exit-code).
Note: hhvm uses a JIT which only kicks in after a few runs. Since we run scripts only once, hhvm always runs slower.

VersionSystem time (s)User time (s)Memory (MiB)