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run code in 300+ PHP versions simultaneously
<?php class MyClass { const A = 500; const B = 5E2; const C = 200 + 300; } var_dump(gettype(MyClass::A)); var_dump(gettype(MyClass::B)); var_dump(gettype(MyClass::C));

preferences:
46.69 ms | 402 KiB | 5 Q