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<?php class Foo { const B = self::A | self::C; const A = 1 << 0; const C = 1 << 1; } class Bar extends Foo { const A = 1 << 2; const C = 1 << 3; } var_dump(decbin(Bar::B));
Output for 7.1.5 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.32, 8.3.0 - 8.3.33, 8.4.1 - 8.4.24, 8.5.0 - 8.5.9
string(2) "11"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.2
string(4) "1100"

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109.66 ms | 1599 KiB | 4 Q