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run code in 300+ PHP versions simultaneously
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Output for 8.1.28 - 8.1.32, 8.2.17 - 8.2.28, 8.3.4 - 8.3.20, 8.4.1 - 8.4.6
Warning: Undefined array key "unknown" in /in/S6PHFI on line 4

preferences:
71.2 ms | 411 KiB | 5 Q