Who has used Baidu cloud push, pointing down the maze, how to solve

Who has used Baidu cloud push, pointing down the maze of it
My system is now, the server side with PHP, the client is Android,
To achieve: Online question and answer application. User A uses a mobile phone to post a question, and the answer to the question is not real-time. Assuming that User B delivered the first answer the next day, the answer needs to be pushed separately to a.
Request with Baidu Cloud push send.
The solution should be that when the PHP interface receives a B answer, it pushes a message to the UID of a.
Now the question is:
1. Server side to use Baidu's PHP SDK? , the client will use the Andriod SDK,
2. How do I integrate the code, mainly, how to let Baidu cloud push to identify who I want to send, said is the cloud push channelid+uid, good blur
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I'm a part of this place. Client to and third party website Baidu message Push interface binding problem is how to achieve a great God can give an example??????
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The same beg Ah!!!

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