3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { } function deleteMe($obj) { $obj = null; } $foo = new Foo(); var_dump($foo); deleteMe($foo); var_dump($foo);
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
object(Foo)#1 (0) { } object(Foo)#1 (0) { }
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9
object(foo)(0) { } object(foo)(0) { }

preferences:
217.94 ms | 401 KiB | 340 Q