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run code in 300+ PHP versions simultaneously
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Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 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 ( [0] => 4 [1] => 5 ) Array ( [0] => 2 ) Array ( [0] => 12 [1] => 3 ) Array ( [0] => 3 [1] => 13 )

preferences:
155.74 ms | 413 KiB | 5 Q