run code in 200+ php & hhvm versions
Bugs & Features
<?php class Person { public static function status() { self::getStatus(); } protected static function getStatus() { echo "Person is alive"; } } //If we call Person::status() we will see "Person is alive" . Now consider what happens when we make a class that inherits from this: //class Deceased extends Person { protected static function getStatus() { echo "Person is deceased"; } } Deceased::status()

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)