phpcms 二级菜单代码

<?php
// 假设这是从数据库中获取的菜单数据
$menu_data = [
    ['name' => '首页', 'url' => '/index'],
    ['name' => '产品', 'url' => '/products', 'children' => [
        ['name' => '产品A', 'url' => '/products/a'],
        ['name' => '产品B', 'url' => '/products/b'],
    ]],
    ['name' => '关于我们', 'url' => '/about'],
];

function render_menu($menu_data, $parent = '') {
    foreach ($menu_data as $item) {
        $class = $parent ? 'sub-menu' : '';
        echo "<li class='{$class}'>";
        echo "<a href='{$item['url']}'>{$item['name']}</a>";
        if (isset($item['children'])) {
            echo "<ul>";
            render_menu($item['children'], 'sub-menu-item');
            echo "</ul>";
        }
        echo "</li>";
    }
}

?>
<ul class="main-menu">
    <?php render_menu($menu_data); ?>
</ul>