3v4l.org

run code in 300+ PHP versions simultaneously
<?php $foo = "0d9"; $bar = "0d9"; var_dump($foo === $bar); var_dump($foo + 1); var_dump($foo === $bar); $foo += 1; $bar++; var_dump([$foo, $bar]);

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61.82 ms | 402 KiB | 5 Q