3v4l.org

run code in 300+ PHP versions simultaneously
<?php class a {} $a=new a; $aa=new a; $aaa=new a; echo(spl_object_hash($a)."\n".spl_object_hash($aa)."\n".spl_object_hash($aaa)."\n");

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35.35 ms | 402 KiB | 5 Q