PHP从组合列表中创建变体表

function generateVariants($combinations, $prefix = []) {
    if (empty($combinations)) {
        return [$prefix];
    }
    
    $variants = [];
    $options = array_shift($combinations);
    
    foreach ($options as $option) {
        $newPrefix = array_merge($prefix, [$option]);
        $variants = array_merge($variants, generateVariants($combinations, $newPrefix));
    }
    
    return $variants;
}

$combinations = [
    ['A', 'B'],
    ['X', 'Y', 'Z'],
    ['1', '2', '3']
];

$variants = generateVariants($combinations);

// 输出变体表
foreach ($variants as $variant) {
    echo implode(', ', $variant) . "\n";
}

A, X, 1
A, X, 2
A, X, 3
A, Y, 1
A, Y, 2
A, Y, 3
A, Z, 1
A, Z, 2
A, Z, 3
B, X, 1
B, X, 2
B, X, 3
B, Y, 1
B, Y, 2
B, Y, 3
B, Z, 1
B, Z, 2
B, Z, 3