3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function foo(StdClass &$foo) { var_dump($foo); } $bar = new StdClass; $bar->foo = 'foo'; foo($bar);
based on R6f4o
Output for 5.6.0 - 5.6.30, hhvm-3.15.4, 7.0.0 - 7.3.0rc3
object(stdClass)#1 (1) { ["foo"]=> string(3) "foo" }