server {
    listen 80;
    location /xxxx/ {}
    location ~ ^/xxxx/.+\.php$ {
        client_max_body_size         1024m;
        client_body_buffer_size      1024m;
        fastcgi_buffer_size          256k;
        fastcgi_buffers              8 256k;
        fastcgi_busy_buffers_size    512k;
        fastcgi_temp_file_write_size 512k;
        expires                      -1s;
        include                      fastcgi_params;
        try_files                    $uri =404;
        fastcgi_pass                 unix:/var/lib/php7/phpfpm.sock;
        fastcgi_index                index.php;
        fastcgi_param                PATH_INFO $fastcgi_path_info;
        fastcgi_param                SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_split_path_info      ^(.+\.php)(/.+)$;
        break;
    }
    location / {
        return 403;
    }
}