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run code in 500+ PHP versions simultaneously
<?php namespace A; function identity($i) { return $i; } namespace B; var_dump(array_map(\A\identity::class, [1, 2]));
Output for 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 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
array(2) { [0]=> int(1) [1]=> int(2) }
preferences:
72.03 ms | 1520 KiB | 4 Q