3v4l.org

run code in 300+ PHP versions simultaneously
<?php class B{ static $bobo; } class A{ function __destruct(){ debug_zval_dump($this); B::$bobo = $this; debug_zval_dump($this); } } $x = new A; debug_zval_dump($x); unset($x);
Output for 7.1.0 - 7.1.25, 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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
object(A)#1 (0) refcount(2){ } object(A)#1 (0) refcount(3){ } object(A)#1 (0) refcount(4){ }
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20
object(A)#1 (0) refcount(2){ } object(A)#1 (0) refcount(4){ } object(A)#1 (0) refcount(5){ }
preferences:
178.41 ms | 402 KiB | 200 Q