Apache下，每个虚拟主机可以单独不同的phpadminvalue，可以设置非常详细的网站目录权限设置，安全性比较高。

nginx做为一个高性能的web服务器已经得到广泛的应用，随着php5.3的发布，php-fpm也已经内置在php里面了，如何安装配置nginx+php-fpm，下面的内容，将集中于给nginx的虚拟主机和php-fpm的pools配合，实现不同虚拟主机运行不同配置的php。

我们下面会配置两个虚拟主机，使用不同的php和php-fpm配置

编辑php-fpm.conf

[global]
pid = /usr/local/php/var/run/php-fpm.pid
error_log = /usr/local/php/var/log/php-fpm.log
log_level = warning
emergency_restart_threshold = 0
emergency_restart_interval = 0
process_control_timeout = 0
daemonize = yes

include=/srv/vhost/*/php-fpm.conf 这里第10行包含各vhost的配置

编辑/srv/vhost/a/php-fpm.conf

[a]
listen = /srv/vhost/a/php-fpm.sock

; Unix user/group of processes
user = nginx
group = nginx

; Choose how the process manager will control the number of child processes.
pm = dynamic
pm.max_children = 50
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 10
pm.max_requests = 100

; Pass environment variables
env[HOSTNAME] = $HOSTNAME
env[PATH] = /usr/local/bin:/usr/bin:/bin
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp

; host-specific php ini settings here
php_admin_value[disable_functions]=phpinfo
php_admin_value[open_basedir]=/srv/vhost/a/webroot:/tmp

当php-fpm和nginx在同一台服务器时，我比较喜欢用unix sockt。这里指定了sockt文件的地址 /srv/vhost/a/php-fpm.sock

编辑 /srv/vhost/b/php-fpm.conf

[b]
listen = /srv/vhost/b/php-fpm.sock

; Unix user/group of processes
user = nginx
group = nginx

; Choose how the process manager will control the number of child processes.
pm = dynamic
pm.max_children = 50
pm.start_servers = 10
pm.min_spare_servers = 5
pm.max_spare_servers = 10
pm.max_requests = 100

; Pass environment variables
env[HOSTNAME] = $HOSTNAME
env[PATH] = /usr/local/bin:/usr/bin:/bin
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp

; host-specific php ini settings here ;php_admin_value[disable_functions]=phpinfo php_admin_value[open_basedir]=/srv/vhost/a/webroot:/tmp 监听在 /srv/vhost/b/php-fpm.sock，另外可以看到，我注释了phpadminvalue[disable_functions]=phpinfo，也就是不禁用phpinfo函数

php-fpm配置完毕，启动它。

接下来配置nginx，配置两个server

server {
    listen       80;
    server_name  a.somethings.me;
    index index.php;
    root /srv/vhost/a/webroot/;

    location /{

    }

    location ~ .*\.php${
        fastcgi_pass  unix:/srv/vhost/a/php-fpm.sock;
        fastcgi_index index.php;
        include fcgi.conf;
    }
    access_log /var/log/nginx/a.somethines.me-access.log;
}

server {
        listen       80;
        server_name  b.somethings.me;
        index index.php;
        root /srv/vhost/a/webroot/;

        location /{

        }       

        location ~ .*\.php${
                fastcgi_pass  unix:/srv/vhost/b/php-fpm.sock;
                fastcgi_index index.php;
                include fcgi.conf;
        }
        access_log /var/log/nginx/b.somethines.me-access.log;
}

两个server分别fastcgi_pass到不同的sockte文件上，分别在/srv/vhost/a/webroot/ 和 /srv/vhost/a/webroot/ 下创建如下文件

<?php phpinfo();

启动nginx，分别访问 a.somethings.me 和 b.somethings.me 发现a.somethings.me 报错如下

Warning: phpinfo() has been disabled for security reasons in /srv/vhost/a/webroot/phpinfo.php on line 2 而b.somethings.me 正确显示了phpinfo信息，说明我们的配置生效了，在看一下我们的进程

OK， 成功了！