CentOS 6 Upgrade Installation php5.6

CentOS default with php5.3, you should use the YII2, you need to install php5.5 version above, consider using the latest php5.6, installation methods are as follows

https://webtatic.com/packages/php55/

1. Add Source

RPM-UVH http://mirror.webtatic.com/yum/el6/latest.rpm

2. Installation

Yum Install php56w

When you encounter an error, go through the following process:

Yum Install yum-plugin-replace
yum replace Php-common--replace-with=php56w-common

Yum Install php56w

3. Complete