run code in 200+ php & hhvm versions
Bugs & Features
<?php $ut = strtotime('2016-07-15'); echo "$ut \n"; $d = date("Y-m-d H:i:s", $ut); echo "$d";
based on 2vc4a

Here you find the average performance (time & memory) of each version. A grayed 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)