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run code in 500+ PHP versions simultaneously
<?php class a {} $a = new a; // object(a)#1 (0) {} var_dump($b = clone clone clone $a); // object(a)#2 (0) {} var_dump(new (new $a)); // object(a)#3 (0) {}
Output for 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
object(a)#2 (0) { } object(a)#3 (0) { }

preferences:
44.32 ms | 866 KiB | 4 Q