3v4l.org

run code in 300+ PHP versions simultaneously
<?php print_r(every(array(3,2,2))); print_r(every(array(1,2,3,4))); function every($levels) { $results = array(); $i = 0; while(true) { $current = $i; $result = array(); foreach(array_reverse($levels) as $max) { array_unshift($result, $current % $max); $current = intval($current / $max); } if($current >= 1) { break; } else { $results[] = $result; $i++; } } return $results; }

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Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.36, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
Array ( [0] => Array ( [0] => 0 [1] => 0 [2] => 0 ) [1] => Array ( [0] => 0 [1] => 0 [2] => 1 ) [2] => Array ( [0] => 0 [1] => 1 [2] => 0 ) [3] => Array ( [0] => 0 [1] => 1 [2] => 1 ) [4] => Array ( [0] => 1 [1] => 0 [2] => 0 ) [5] => Array ( [0] => 1 [1] => 0 [2] => 1 ) [6] => Array ( [0] => 1 [1] => 1 [2] => 0 ) [7] => Array ( [0] => 1 [1] => 1 [2] => 1 ) [8] => Array ( [0] => 2 [1] => 0 [2] => 0 ) [9] => Array ( [0] => 2 [1] => 0 [2] => 1 ) [10] => Array ( [0] => 2 [1] => 1 [2] => 0 ) [11] => Array ( [0] => 2 [1] => 1 [2] => 1 ) ) Array ( [0] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 0 ) [1] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 1 ) [2] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 2 ) [3] => Array ( [0] => 0 [1] => 0 [2] => 0 [3] => 3 ) [4] => Array ( [0] => 0 [1] => 0 [2] => 1 [3] => 0 ) [5] => Array ( [0] => 0 [1] => 0 [2] => 1 [3] => 1 ) [6] => Array ( [0] => 0 [1] => 0 [2] => 1 [3] => 2 ) [7] => Array ( [0] => 0 [1] => 0 [2] => 1 [3] => 3 ) [8] => Array ( [0] => 0 [1] => 0 [2] => 2 [3] => 0 ) [9] => Array ( [0] => 0 [1] => 0 [2] => 2 [3] => 1 ) [10] => Array ( [0] => 0 [1] => 0 [2] => 2 [3] => 2 ) [11] => Array ( [0] => 0 [1] => 0 [2] => 2 [3] => 3 ) [12] => Array ( [0] => 0 [1] => 1 [2] => 0 [3] => 0 ) [13] => Array ( [0] => 0 [1] => 1 [2] => 0 [3] => 1 ) [14] => Array ( [0] => 0 [1] => 1 [2] => 0 [3] => 2 ) [15] => Array ( [0] => 0 [1] => 1 [2] => 0 [3] => 3 ) [16] => Array ( [0] => 0 [1] => 1 [2] => 1 [3] => 0 ) [17] => Array ( [0] => 0 [1] => 1 [2] => 1 [3] => 1 ) [18] => Array ( [0] => 0 [1] => 1 [2] => 1 [3] => 2 ) [19] => Array ( [0] => 0 [1] => 1 [2] => 1 [3] => 3 ) [20] => Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 0 ) [21] => Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 1 ) [22] => Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 2 ) [23] => Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 ) )
preferences:
267.64 ms | 429 KiB | 5 Q