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<?php function arraySum(array $array) { $stack = [$array]; $sum = 0; while (($items = array_pop($stack))) { foreach ($items as $item) { if (is_array($item)) { $stack[] = $item; } else { $sum += $item; } } } return $sum; } echo arraySum([1, [1, 1], [1, [1, 1]]]);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.7, 7.2.29 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.30, 8.2.0 - 8.2.24, 8.3.0 - 8.3.12
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76.79 ms | 407 KiB | 5 Q