3v4l.org

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Output for 5.6.38, 7.1.0 - 7.1.22, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.17, 8.4.1 - 8.4.4
array(5) { ["Cat"]=> int(1) ["Dog"]=> int(0) ["Bird"]=> int(0) ["Rabbit"]=> int(0) ["Fish"]=> int(1) }

preferences:
151.02 ms | 412 KiB | 5 Q