给博客加上结构化数据：JSON-LD 完整实践

$json = json_encode($schema, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
return '<script type="application/ld+json">' . $json . '</script>';

{
  "@context": "https://schema.org",
  "@type": "BreadcrumbList",
  "itemListElement": [
    { "@type": "ListItem", "position": 1, "name": "首页", "item": "https://vabora.dev/" },
    { "@type": "ListItem", "position": 2, "name": "文章", "item": "https://vabora.dev/posts/php85-zero-dependency-framework" }
  ]
}