php_fpm和nginx有两种通信方式

一种是 tcp socket 我们常见的在nginx配置文件中

location ~ \.php$ {

  include fastcgi_params;

  fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;;

  fastcgi_pass 127.0.0.1:9000;

  fastcgi_index index.php;

}

配置9000端口

还有一种是 通过unix socket

location ~ \.php$ {

    include fastcgi_params;

    fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;;

    fastcgi_pass unix:/var/run/php5-fpm.sock;

    fastcgi_index index.php;

}