run code in 200+ php & hhvm versions
Bugs & Features
<?php /* echo date('d/m/Y'); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W".date("W")."-1")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W".date("W")."-5")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W27-1")); print "\n"; echo date('d/m/Y', strtotime(date('Y')."-W27-5")); */ print "\n"; echo date('m', strtotime(date('Y')."-W27-5"); ?>

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)