php 导航菜单

<?php
$navItems = [
    ['name' => '首页', 'url' => '/'],
    ['name' => '关于我们', 'url' => '/about'],
    ['name' => '产品', 'url' => '/products', 'children' => [
        ['name' => '产品1', 'url' => '/products/product1'],
        ['name' => '产品2', 'url' => '/products/product2']
    ]],
    ['name' => '联系我们', 'url' => '/contact']
];
?>

<ul>
    <?php foreach ($navItems as $item): ?>
        <li>
            <a href="<?php echo htmlspecialchars($item['url']); ?>"><?php echo htmlspecialchars($item['name']); ?></a>
            <?php if (isset($item['children'])): ?>
                <ul>
                    <?php foreach ($item['children'] as $child): ?>
                        <li><a href="<?php echo htmlspecialchars($child['url']); ?>"><?php echo htmlspecialchars($child['name']); ?></a></li>
                    <?php endforeach; ?>
                </ul>
            <?php endif; ?>
        </li>
    <?php endforeach; ?>
</ul>