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run code in 300+ PHP versions simultaneously
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Output for 8.1.0 - 8.1.32, 8.2.0 - 8.2.28, 8.3.0 - 8.3.19, 8.4.1 - 8.4.5
NULL bool(false) int(3) string(0) "" bool(false) int(3) string(1) "0" bool(true) int(3) string(3) "abc" bool(false) int(2) string(1) "1" bool(true) int(1) string(2) "01" bool(true) int(1) string(3) "0.1" bool(true) int(2)

preferences:
75.21 ms | 411 KiB | 5 Q