Why use CJSON encode when we have json_encode

Question

I am building an API for a website using Yii. I know that there is a utility class called CJson and has a function called encode.

As far as I know there are addition

Answer 1

Only thing I can think minimum php version support.

Yii support php 5.1 as minimum version See Yii Installation Page . While json_encode/json_decode introduced in php 5.2. So It can be a reason for Yii having a library for CJson.