run code in 200+ php & hhvm versions
Bugs & Features
<?php class T { private $e; private $charset = "UTF-8"; public function output() { $e = $this->e; echo $e('hi'); } public setEscaper(Closure $close) { $this->e = $close->bindTo($this); } } $t = new T; $t->setEscaper(function($str) { return $this->charset; }); $t->output();

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)