新用户关注微信公众平台，将产生一个订阅事件，即subscribe事件，默认代码中没有对这一事件进行相应回复处理。
在新用户关注公众平台后，可能想知道该平台提供了哪些功能，以及怎样使用该平台，通俗一点讲就是该平台的“使用说明书”。
本文将详细讲述对subscribe事件的处理过程，回复相应信息提升交互性。
立即学习“PHP免费学习笔记（深入）”；
微信目前提供了五种消息类型，分别为：
- 文本消息（text）；
- 图片消息（image）；
- 地理位置消息（location）；
- 链接消息（link）；
- 事件推送（event）；
接收到消息后，首先需要对消息类型做出判断，然后再针对不同类型的消息做出处理。在事件推送中，事件类型又分为三种，subscribe（订阅）、unsubscribe（取消订阅）、CLICK（自定义菜单点击事件），还需要再加一次判断；判断为subscribe事件后，根据设定好的欢迎消息，回复给用户。
<span> = <span simplexml_load_string>(<span>, 'SimpleXMLElement',<span libxml_nocdata><span> = <span trim>(<span>-><span msgtype><span switch>(<span><span><span case> "text":
<span> = <span>->handleText(<span><span><span break><span><span case> "event":
<span> = <span>->handleEvent(<span><span><span break><span><span default>:
<span> = "Unknow msg type: ".<span><span><span break><span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>说明：
$RX_TYPE = trim($postObj->MsgType); 得到消息类型；
case "text":
$resultStr = $this->handleText($postObj); 使用handleText() 函数处理文本消息；
case "event":
$resultStr = $this->handleEvent($postObj); 使用handleEvent() 函数处理事件推送；
<span switch> (<span>-><span event><span case> "subscribe":
<span> = "感谢您关注【卓锦苏州】"."\n"."微信号：zhuojinsz"."\n"."卓越锦绣，名城苏州，我们为您提供苏州本地生活指南，苏州相关信息查询，做最好的苏州微信平台。"."\n"."目前平台功能如下："."\n"."【1】 查天气，如输入：苏州天气"."\n"."【2】 查公交，如输入：苏州公交178"."\n"."【3】 翻译，如输入：翻译I love you"."\n"."【4】 苏州信息查询，如输入：苏州观前街"."\n"."更多内容，敬请期待..."<span><span break><span><span default> :
<span> = "Unknow Event: ".<span>-><span event><span break><span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>说明：
如果是subscribe事件，设定回复内容为“感谢您关注【卓锦苏州】...”；
<?<span php><span><span wechat php test><span>
<span><span define your token>
<span define>("TOKEN", "zhuojin"<span><span> = <span new><span wechatcallbackapitest><span>-><span responsemsg><span><span>
<span class><span wechatcallbackapitest><span><span public function valid signature option if echo exit><span>
<span public> <span function><span responsemsg><span><span get post data may be due to the different environments>
<span> = <span>["HTTP_RAW_POST_DATA"<span><span><span extract post data>
<span if> (!<span empty>(<span><span><span> = <span simplexml_load_string>(<span>, 'SimpleXMLElement',<span libxml_nocdata><span> = <span trim>(<span>-><span msgtype><span switch>(<span><span><span case> "text":
<span> = <span>->handleText(<span><span><span break><span><span case> "event":
<span> = <span>->handleEvent(<span><span><span break><span><span default>:
<span> = "Unknow msg type: ".<span><span><span break><span><span echo> <span><span><span else><span><span echo> ""<span><span exit><span><span public> <span function> handleText(<span><span><span> = <span>-><span fromusername><span> = <span>-><span tousername><span> = <span trim>(<span>-><span content><span> = <span time><span><span> = "<span>"<span><span if>(!<span empty>( <span><span><span> = "text"<span><span> = "Welcome to wechat world!"<span><span> = <span sprintf>(<span>, <span>, <span>, <span>, <span>, <span><span><span echo> <span><span><span else><span><span echo> "Input something..."<span><span public> <span function> handleEvent(<span><span><span> = ""<span><span switch> (<span>-><span event><span case> "subscribe":
<span> = "感谢您关注【卓锦苏州】"."\n"."微信号：zhuojinsz"."\n"."卓越锦绣，名城苏州，我们为您提供苏州本地生活指南，苏州相关信息查询，做最好的苏州微信平台。"."\n"."目前平台功能如下："."\n"."【1】 查天气，如输入：苏州天气"."\n"."【2】 查公交，如输入：苏州公交178"."\n"."【3】 翻译，如输入：翻译I love you"."\n"."【4】 苏州信息查询，如输入：苏州观前街"."\n"."更多内容，敬请期待..."<span><span break><span><span default> :
<span> = "Unknow Event: ".<span>-><span event><span break><span><span> = <span>->responseText(<span>, <span><span><span return> <span><span><span public> <span function> responseText(<span>, <span>, <span>=0<span><span> = "<span>"<span><span> = <span sprintf>(<span>, <span>->FromUserName, <span>->ToUserName, <span time>(), <span>, <span><span><span return> <span><span><span private> <span function><span checksignature><span> = <span>["signature"<span><span> = <span>["timestamp"<span><span> = <span>["nonce"<span><span> =<span token><span> = <span array>(<span>, <span>, <span><span><span sort>(<span><span><span> = <span implode>( <span><span><span> = <span sha1>( <span><span><span if>( <span> == <span><span><span return> <span true><span><span else><span><span return> <span false><span>?></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
请关注 卓锦苏州 微信公众帐号，卓锦苏州 基于SAE 平台开发，针对于主流的微信功能进行开发测试。
您可以关注 卓锦苏州 公众帐号进行功能测试，以及获取新的应用开发。
1. 登录微信客户端，朋友们 -> 添加朋友 -> 搜号码 -> zhuojinsz，查找并关注。
2. 扫描二维码：
卓锦苏州 功能列表。
We Believe, Great People Share Knowledge...
