有可能是没有成功把 php 请求转发到  fastcgi_pass   进行解析。

下面是一个可运行的实例，仅供参考：

server {
    listen       80;
    server_name  www.blog.local;                  # 改成自己的域名
    root   "/var/www/blog";

    index index.php index.html;

    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }

    location ~ \.php(.*)$ {
        fastcgi_pass             127.0.0.1:9000;   # 按自己的 PHP 端口修改
        fastcgi_index            index.php;
        fastcgi_split_path_info  ^((?U).+\.php)(/?.+)$;
        fastcgi_param            SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        fastcgi_param            PATH_INFO        $fastcgi_path_info;
        fastcgi_param            PATH_TRANSLATED  $document_root$fastcgi_path_info;
        include                  fastcgi_params;
    }
}