我在ubuntu 13.04上全新安装PHP5-fpm和Nginx时使用此配置：

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

    root /usr/share/Nginx/html;
    index index.PHP index.html index.htm;

    server_name localhost;

    location / {
            try_files $uri $uri/ /index.html;
    }

    location /doc/ {
            alias /usr/share/doc/;
            autoindex on;
            allow 127.0.0.1;
            allow ::1;
            deny all;
    }

    error_page 404 /404.html;

    location ~ \.PHP${
            fastcgi_split_path_info ^(.+\.PHP)(/.+)$;
            # NOTE: You should have "cgi.fix_pathinfo = 0;" in PHP.ini

            # With PHP5-cgi alone:
            fastcgi_pass 127.0.0.1:9000;
            # With PHP5-fpm:
            fastcgi_pass unix:/var/run/PHP5-fpm.sock;
            fastcgi_index index.PHP;
            include fastcgi_params;
    }
}

但是,我的网页浏览器将PHP视为文本而不是执行的结果.我应该在哪里寻找解决问题？