3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo1($a, $b) { var_dump($a, $b); } function foo2($a) { return "e$a"; } function foo3() { return 2; } function foo4() { return 3; } foo1(foo2(foo4()), foo3());
based on lOpgk
Output for 4.3.0 - 7.1.0
string(2) "e3" int(2)