<p>以前，我可以轻松处理这样的事情，但自从7年前离开开发世界以来，我失去了开发思维...</p> <p>我的情况是，我正在尝试输出客户可以选择的每个可能的产品选项以及生成的SKU - 由每个选项的SKU附加到产品的SKU。</p> <p>数据存储得不好，因为这是一个相当古老的网站。</p> <p>下面是MySQL中存储数据的示例，以及我在PHP中尝试实现的目标。我将其限制为一个具有多个选项的产品。</p> <table class="s-table"> <thead> <tr> <th>products.id</th> <th>products.sku</th> </tr> </thead> <tbody> <tr> <td>1</td> <td>a</td> </tr> </tbody> </table> <table class="s-table"> <thead> <tr> <th>options.id</th> <th>options.product_id</th> </tr> </thead> <tbody> <tr> <td>1</td> <td>1</td> </tr> <tr> <td>2</td> <td>1</td> </tr> <tr> <td>3</td> <td>1</td> </tr> <tr> <td>4</td> <td>1</td> </tr> </tbody> </table> <table class="s-table"> <thead> <tr> <th>option_values.id</th> <th>option_values.option_id</th> <th>option_values.value</th> </tr> </thead> <tbody> <tr> <td>1</td> <td>1</td> <td>b</td> </tr> <tr> <td>2</td> <td>1</td> <td>c</td> </tr> <tr> <td>3</td> <td>1</td> <td>d</td> </tr> <tr> <td>4</td> <td>2</td> <td>e</td> </tr> <tr> <td>5</td> <td>2</td> <td>f</td> </tr> <tr> <td>6</td> <td>3</td> <td>g</td> </tr> <tr> <td>7</td> <td>3</td> <td>h</td> </tr> <tr> <td>8</td> <td>4</td> <td>i</td> </tr> <tr> <td>9</td> <td>4</td> <td>j</td> </tr> <tr> <td>10</td> <td>4</td> <td>k</td> </tr> </tbody> </table> <p>迭代每个选项的每个可能组合，并输出生成的SKU；</p> <table class="s-table"> <thead> <tr> <th>可能的SKUs</th> </tr> </thead> <tbody> <tr> <td>abegi</td> </tr> <tr> <td>acegi</td> </tr> <tr> <td>adegi</td> </tr> <tr> <td>abfgi</td> </tr> <tr> <td>acfgi</td> </tr> <tr> <td>adfgi</td> </tr> <tr> <td>abehi</td> </tr> <tr> <td>acehi</td> </tr> <tr> <td>adehi</td> </tr> <tr> <td>abegj</td> </tr> <tr> <td>acegj</td> </tr> <tr> <td>adegj</td> </tr> <tr> <td>abegk</td> </tr> <tr> <td>acegk</td> </tr> <tr> <td>adegk</td> </tr> <tr> <td>[等等]</td> </tr> </tbody> </table> <p>当我像这样写出来时，它似乎非常简单，这让我想知道我是否遗漏了什么...</p> <p>我目前正在迭代每个产品，对于每个产品的每个选项，然后对于每个选项的每个值，但显然这不能满足每种可能的情况。</p> <p>DB Fiddle - https://www.db-fiddle.com/f/vHWiKsKi9WUvvDwAa6pqw6/0</p> <p>谢谢！</p>

<?php

function all_skus(array $product) {
    $skus = [];
    $result = [[]];

    foreach ($product['options'] as $key => $option) {
        $append = [];
        foreach ($result as $options) {
            foreach ($option as $value) {
                $append[] = $options + [$key => $value];
            }
        }
        $result = $append;
    }

    foreach ($result as $option_set) {
        $skus[] = $product['sku'] . implode($option_set);
    }

    return $skus;
}


$pdo = new PDO(/* your stuff here */);
$pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_OBJ);

$res = $pdo->query('
            SELECT `o`.`product_id`, `p`.`sku`, `ov`.`option_id`, `ov`.`value`
            FROM `products` `p`
            JOIN `options` `o` ON `p`.`id` = `o`.`product_id`
            JOIN `option_values` `ov` ON `o`.`id` = `ov`.`option_id`'
        );

$nested = [];
foreach ($res as $row) {
    $nested[$row->product_id]['options'][$row->option_id][] = $row->value;
    $nested[$row->product_id]['sku'] = $row->sku;
}

$skus = [];
foreach ($nested as $i => $product) {
    $skus = array_merge($skus, all_skus($product));
    unset($nested[$i]);
}

var_dump($skus);

function all_skus(array $product) {
    $result = [$product['sku']];

    foreach ($product['options'] as $option) {
        $append = [];
        foreach ($result as $options) {
            foreach ($option as $value) {
                $append[] = $options . $value;
            }
        }
        $result = $append;
    }

    return $result;
}