centos7 安装 php7x

yum install epel-release yum-utils -y
yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum-config-manager --enable remi-php7x
yum install -y php

显示版本
php -v

搜索php模块
yum search php | more
启用和关闭和查询相关版本
yum list installed | grep php
yum-config-manager --disable remi-php7x
yum-config-manager --enable  remi-php7x