3v4l.org

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 - 8.3.20, 8.4.1 - 8.4.6
array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> *RECURSION* } } array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> *RECURSION* } }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> array(2) { [0]=> int(1) [1]=> *RECURSION* } } } array(2) { [0]=> int(1) [1]=> array(2) { [0]=> int(2) [1]=> &array(2) { [0]=> int(1) [1]=> *RECURSION* } } }
preferences:
178.62 ms | 413 KiB | 5 Q