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run code in 300+ PHP versions simultaneously
<?php class a { public $b = 1; } $a = new A; var_dump($a); var_dump(unserialize(serialize($a))); var_dump(json_decode(json_encode($a)));
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 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 - 8.2.18, 8.3.0 - 8.3.6
object(a)#1 (1) { ["b"]=> int(1) } object(a)#2 (1) { ["b"]=> int(1) } object(stdClass)#2 (1) { ["b"]=> int(1) }

preferences:
177.42 ms | 404 KiB | 237 Q