linux 下php-fpm+nginx 瀏覽器訪問php頁面，報file not found

後臺nginx 報錯：*21 FastCGI sent in stderr: "Primary script unknown"

可能的原因是：

location ~ ^/.*\.php$

這段中，用alias代替了root

修改前：

    location ~ ^/.*\.php$ {
        alias /usr/share/nginx/xxxxxx;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }

修改後：

    location ~ ^/.*\.php$ {
        root /usr/share/nginx/;
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
        include        fastcgi_params;
    }