Online PHP editor | output for QdIUh

@ 2022-06-17T13:56:39Z

<?php

function popUnshift(array $indexedArray, int $popShiftsCount): array
{
    $count = count($indexedArray);
    if ($count < 2) {
        return $indexedArray;
    }
    $remainder = $popShiftsCount % $count;
    if (!$remainder) {
        return $indexedArray;
    }
    return array_merge(
        array_splice($indexedArray, -$remainder),
        $indexedArray
    );
}

$A = [1, 2, 3, 4];
foreach (range(0, 9) as $K) {
    var_export(popUnshift($A, $K));
    echo "\n---\n";
}

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, ) --- array ( 0 => 4, 1 => 1, 2 => 2, 3 => 3, ) --- array ( 0 => 3, 1 => 4, 2 => 1, 3 => 2, ) --- array ( 0 => 2, 1 => 3, 2 => 4, 3 => 1, ) --- array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, ) --- array ( 0 => 4, 1 => 1, 2 => 2, 3 => 3, ) --- array ( 0 => 3, 1 => 4, 2 => 1, 3 => 2, ) --- array ( 0 => 2, 1 => 3, 2 => 4, 3 => 1, ) --- array ( 0 => 1, 1 => 2, 2 => 3, 3 => 4, ) --- array ( 0 => 4, 1 => 1, 2 => 2, 3 => 3, ) ---

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