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run code in 300+ PHP versions simultaneously
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Output for 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 - 8.4.6
Array ( [0] => Array ( [0] => 23 [1] => 12 ) [1] => Array ( [0] => 24 [1] => 22 ) ) Array ( [0] => Array ( [0] => 25 [1] => 23 ) [1] => Array ( [0] => 22 [1] => 24 ) ) Array ( [0] => Array ( [0] => 11 [1] => 13 ) [1] => Array ( [0] => 12 [1] => 14 ) [2] => Array ( [0] => 21 [1] => 23 ) )
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
Array ( [0] => Array ( [0] => 23 [1] => 12 ) [1] => Array ( [0] => 24 [1] => 22 ) ) Array ( [0] => Array ( [0] => 23 [1] => 25 ) [1] => Array ( [0] => 24 [1] => 22 ) ) Array ( [0] => Array ( [0] => 11 [1] => 13 ) [1] => Array ( [0] => 12 [1] => 14 ) [2] => Array ( [0] => 21 [1] => 23 ) )

preferences:
179.28 ms | 414 KiB | 5 Q