3v4l.org

run code in 300+ PHP versions simultaneously
<?php enum Foo: int { case One = 1; } var_dump( Foo::One instanceof UnitEnum, Foo::One instanceof BackedEnum, Foo::One instanceof IntBackedEnum, );
Output for 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
bool(true) bool(true) bool(false)

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