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run code in 300+ PHP versions simultaneously
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Output for 5.6.40, 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 - 8.1.31, 8.2.0 - 8.2.27, 8.3.0 - 8.3.17, 8.4.1 - 8.4.4
array(4) { [0]=> int(1) [1]=> int(2) ["3_0"]=> int(4) ["3_1"]=> int(5) } array(4) { ["0_0"]=> int(1) ["0_1"]=> int(2) ["1_0"]=> int(3) ["1_1"]=> int(4) } array(1) { ["a_b"]=> string(5) "value" } array(2) { ["a_b"]=> string(5) "value" ["c_b"]=> string(12) "anothervalue" }

preferences:
109.62 ms | 417 KiB | 6 Q