微信公众平台可以根据用户发送的信息进行判断，然后给出对应的回复，具有良好的交互性。下文将模拟简单的回复功能，根据这个案例，开发者也可以基本理解微信交互的原理，进行更深层次的开发。
用户发送过来的文本信息，我们可以提取关键字，通过简单的 if...elseif...else... 实现。
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关键代码如下：
<span if>(<span>=="你好"<span><span> = "hello"<span><span elseif>(<span>=="苏州"<span><span> = "上有天堂，下有苏杭"<span><span else><span><span> = "感谢您关注【卓锦苏州】 微信号：zhuojinsz"<span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
如果用户发送"你好"，则回复"hello"，如果用户发送"苏州"，则回复"上有天堂，下有苏杭"，其他信息，则回复你的欢迎词。
<?<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 if>(<span>=="你好"<span><span> = "hello"<span><span elseif>(<span>=="苏州"<span><span> = "上有天堂，下有苏杭"<span><span else><span><span> = "感谢您关注【卓锦苏州】 微信号：zhuojinsz"<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></span></span></span></span></span></span></span></span></span></span></span></span>
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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：
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