在y个不同的存储箱中获取x个不同项的组合的PHP资源？

<?php
function getCombinations($items, $count) {
    $combinations = [];
    $total = count($items);
    
    // 使用递归生成组合
    function generate($start, $combination) use (&$combinations, $items, $count, $total) {
        if (count($combination) == $count) {
            $combinations[] = $combination;
            return;
        }
        
        for ($i = $start; $i < $total; $i++) {
            $newCombination = $combination;
            $newCombination[] = $items[$i];
            generate($i + 1, $newCombination);
        }
    }
    
    generate(0, []);
    
    return $combinations;
}

$storageBoxes = ['Box1', 'Box2', 'Box3', 'Box4', 'Box5'];
$items = ['Item1', 'Item2', 'Item3', 'Item4', 'Item5'];

$combinations = getCombinations($items, count($storageBoxes));

foreach ($combinations as $combination) {
    echo "组合：";
    foreach ($combination as $index => $item) {
        echo $item . " 存储在 " . $storageBoxes[$index] . " ";
    }
    echo "\n";
}
?>