CentOS升级到php7

1. 查看当前php版本

$ php -v

2. 检查当前PHP的安装包

$ yum list installed | grep php

3. 移除当前PHP的安装包

$ yum remove php*

4. 添加第三方的YUM源

CentOS 6.5：
$ rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm

CentOS 7.x：
$ rpm -Uvh https://mirror.webtatic.com/yum/el7/epel-release.rpm
$ rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

5. 查看YUM源上能用PHP安装包

$ yum list php*

6. 安装php7

$ yum install php70w