How to realize the automatic reply of text message developed by Wechat official account by php

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The details are as follows

Download 1.PHP sample code

Download address 1: http://xiazai.jb51.net/201608/yuanma/phpwx(jb51.net).rar

Download address 2: https://mp.weixin.qq.com/wiki/home/index.html (start development-"access Guide -" PHP sample code download)

2.wx_sample.php initial code

3. Call the reply message method

Comment out $wechatObj- > valid () in the wx_sample.php file, and add the sentence "$wechatObj- > responseMsg ();" under it.

4. Keyword automatic reply and follow reply

Keyword stores text messages sent by users on Wechat.

Official developer documentation: https://mp.weixin.qq.com/wiki/home/index.html (message Management-"receive messages-receive event push -" 1. Follow / unfollow events)

There are two differences between following events and normal text messages, one is that the MsgType value is event, and the other is that the event value is subscribe. Since the official documentation (the original wx_sample.php) did not extract this parameter, we need to extract it ourselves. Add two variables $msgType and $event to the program.