3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php //No constructor class Foo {} $a = null; $f = new Foo($a = 123); var_dump($a); // NULL as expected //PHP 5 style constructor class Foo2 { function __construct(){} } $a = null; $f = new Foo2($a = 123); var_dump($a); // int(123) what????
Output for hhvm-3.10.0 - 3.12.0, 7.1.0
int(123) int(123)
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.6.28, 7.0.0 - 7.0.14
NULL int(123)
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/YuA4P on line 15
Process exited with code 255.
Output for 4.3.0 - 4.4.9
NULL NULL