3v4l.org

run code in 500+ PHP versions simultaneously
<?php class Test { public $a = 1; public $b = 2; } $test = new Test; unset($test->b); var_dump($test); var_dump(unserialize(serialize($test)));
Output for 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 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
object(Test)#1 (1) { ["a"]=> int(1) } object(Test)#2 (2) { ["a"]=> int(1) ["b"]=> int(2) }
preferences:
103.79 ms | 1475 KiB | 4 Q