NginX配置下载index.php

Question

我有以下nginx配置。

mydomain.com / etc / nginx / sites-available / default

DNS设置 - 记录类型：ANAME，名称：@，IP：1.2.3.4

server {
    listen 80;
    listen [::]:80 ipv6only=on;

    root /var/www/html/mydomain/public;
    index index.php index.html;
    server_name mydomain.com;

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

    location ~ \.php$ {
            try_files $uri /index.php =404;
            fastcgi_split_path_info ^(.+\.php)(/.+)$;
            fastcgi_pass unix:/var/run/php5-fpm.sock;
            fastcgi_index index.php;
            fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
            include fastcgi_params;
    }
}

stats.mydomain.com / etc / nginx / sites-available / piwik

DNS设置 - 记录类型：ANAME，名称：统计数据，IP：1.2.3.4

server {
    listen 80 default_server;
    listen [::]:80 default_server ipv6only=on;

    server_name stats.mydomain.com;
    root /var/www/piwik;
    index index.php index.html index.htm;

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

    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass unix:/var/run/php5-fpm.sock;
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        include fastcgi_params;
    }
}

我的主域名完美运行并正确处理php。但是，我的子域在浏览器中显示原始代码/ index.php。

我错过了什么？

任何帮助都将不胜感激。