3v4l.org

run code in 300+ PHP versions simultaneously
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Output for 7.1.25 - 7.1.28, 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 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
array ( 4 => 5, 6 => 7, 7 => 8, )

preferences:
188.02 ms | 412 KiB | 5 Q