1.由于我也不知道为什么，在网上找了很多资料，nginx要和php-fpm结合，所以在使用nginx配置之前要安装php-fpm

2.yum install php70w-fpm，service php-fpm start

使用yum install php-fpm会报错

Error: php70w-common conflicts with php-common-5.4.16-42.el7.x86_64
You could try using --skip-broken to work around the problem
You could try running: rpm -Va --nofiles --nodigest

3.rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm

4.yum install nginx

 service nginx start

5.

# find / -name nginx.conf

/etc/nginx/nginx.conf

在nginx.conf中最后一行看到

 include /etc/nginx/conf.d/*.conf;

所以找到/etc/nginx/conf.d/default.conf;

在location下面加上同级

location ~ \.php$ {
root /var/www/html; #指定php的根目录
fastcgi_pass 127.0.0.1:9000;#php-fpm的默认端口是9000
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

6.nginx -t如果没有报错，报错去修改错误

7./usr/sbin/nginx -s reload 重启nginx服务

然后在/var/www/html建立index.php

<?php

phpinfo();

可以看到

centos7 安装LNMP（php7）之 nginx php-fpm yum安装以及配置文件修改