微信开发基础教程

<xml>
<ToUserName><![CDATA[ollB4jqgdO_cRnVXk_wRnSywgtQ8]]></ToUserName>
<FromUserName><![CDATA[gh_b629c48b653e]]></FromUserName>
<CreateTime>1372310544</CreateTime>
<MsgType><![CDATA[music]]></MsgType>
<Music>
<Title><![CDATA[最炫民族风]]></Title>
<Description><![CDATA[凤凰传奇]]></Description>
<MusicUrl><![CDATA[http://zj189.cn/zj/download/music/zxmzf.mp3]]></MusicUrl>
<HQMusicUrl><![CDATA[http://zj189.cn/zj/download/music/zxmzf.mp3]]></HQMusicUrl>
</Music>
<FuncFlag>0</FuncFlag>
</xml>

ToUserName接收方帐号（收到的OpenID）
FromUserName开发者微信号
CreateTime消息创建时间
MsgType消息类型，此处为music
Title音乐标题
Description音乐描述
MusicUrl音乐链接
HQMusicUrl高质量音乐链接，WIFI环境优先使用该链接播放音乐
FuncFlag位0x0001被标志时，星标刚收到的消息。

<xml>
<ToUserName><![CDATA[gh_b629c48b653e]]></ToUserName>
<FromUserName><![CDATA[ollB4jv7LA3tydjviJp5V9qTU_kA]]></FromUserName>
<CreateTime>1372307736</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[subscribe]]></Event>
<EventKey><![CDATA[]]></EventKey>
</xml>

<xml>
<ToUserName><![CDATA[gh_b629c48b653e]]></ToUserName>
<FromUserName><![CDATA[ollB4jqgdO_cRnVXk_wRnSywgtQ8]]></FromUserName>
<CreateTime>1372309890</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[unsubscribe]]></Event>
<EventKey><![CDATA[]]></EventKey>
</xml>

<xml>
<ToUserName><![CDATA[gh_680bdefc8c5d]]></ToUserName>
<FromUserName><![CDATA[oIDrpjqASyTPnxRmpS9O_ruZGsfk]]></FromUserName>
<CreateTime>1377886191</CreateTime>
<MsgType><![CDATA[event]]></MsgType>
<Event><![CDATA[CLICK]]></Event>
<EventKey><![CDATA[天气深圳]]></EventKey>
</xml>

ToUserName接收方微信号
FromUserName发送方微信号，若为普通用户，则是一个OpenID
CreateTime消息创建时间
MsgType消息类型，event
Event事件类型，subscribe(订阅)、unsubscribe(取消订阅)、CLICK(自定义菜单点击事件)
EventKey事件KEY值，与自定义菜单接口中KEY值对应

第四章实现天气预报功能

http://apix.sinaapp.com/weather/

http://apix.sinaapp.com/weather/?appkey=trialuser&city=%E6%B7%B1%E5%9C%B3

[
{
"Title":"深圳天气预报",
"Description":"",
"PicUrl":"",
"Url":""
},
{
"Title":"【实况】温度18℃湿度59%%东北风2级发布时间：08:55",
"Description":"",
"PicUrl":"",
"Url":""
},
{
"Title":"【舒适】建议着长袖T恤、衬衫加单裤等服装。年老体弱者宜着针织长袖衬衫、马甲和长裤。",
"Description":"",
"PicUrl":"",
"Url":""
},
{
"Title":"11月19日周三晴23℃~17℃无持续风向微风日出日落：06:38~17:39",
"Description":"",
"PicUrl":"http://discuz.comli.com/weixin/weather/icon/d00.jpg",
"Url":""
},
{
"Title":"11月20日周四多云25℃~17℃无持续风向微风日出日落：06:39~17:38",
"Description":"",
"PicUrl":"http://discuz.comli.com/weixin/weather/icon/d01.jpg",
"Url":""
},
{
"Title":"11月21日周五多云26℃~18℃无持续风向微风日出日落：06:40~17:38",
"Description":"",
"PicUrl":"http://discuz.comli.com/weixin/weather/icon/d01.jpg",
"Url":""
}
]

<?php
/*
方倍工作室
CopyRight2014AllRightsReserved
*/

define("TOKEN","weixin");

$wechatObj=newwechatCallbackapiTest();
if(!isset($_GET['echostr'])){
$wechatObj->responseMsg();
}else{
$wechatObj->valid();
}

classwechatCallbackapiTest
{
//验证签名
publicfunctionvalid()
{
$echoStr=$_GET["echostr"];
$signature=$_GET["signature"];
$timestamp=$_GET["timestamp"];
$nonce=$_GET["nonce"];
$token=TOKEN;
$tmpArr=array($token,$timestamp,$nonce);
sort($tmpArr);
$tmpStr=implode($tmpArr);
$tmpStr=sha1($tmpStr);
if($tmpStr==$signature){
echo$echoStr;
exit;
}
}

publicfunctionresponseMsg()
{
$postStr=$GLOBALS["HTTP_RAW_POST_DATA"];
if(!empty($postStr)){
$this->logger("R".$postStr);
$postObj=simplexml_load_string($postStr,'SimpleXMLElement',LIBXML_NOCDATA);
$RX_TYPE=trim($postObj->MsgType);

$result="";
switch($RX_TYPE)
{
case"event":
$result=$this->receiveEvent($postObj);
break;
case"text":
$result=$this->receiveText($postObj);
break;
}
$this->logger("T".$result);
echo$result;
}else{
echo"";
exit;
}
}

privatefunctionreceiveEvent($object)
{
switch($object->Event)
{
case"subscribe":
$content="欢迎关注方倍工作室";
break;
}
$result=$this->transmitText($object,$content);
return$result;
}

privatefunctionreceiveText($object)
{
$keyword=trim($object->Content);
$url="http://apix.sinaapp.com/weather/?appkey=".$object->ToUserName."&city=".urlencode($keyword);
$output=file_get_contents($url);
$content=json_decode($output,true);

$result=$this->transmitNews($object,$content);
return$result;
}

privatefunctiontransmitText($object,$content)
{
if(!isset($content)||empty($content)){
return"";
}
$textTpl="<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";
$result=sprintf($textTpl,$object->FromUserName,$object->ToUserName,time(),$content);
return$result;
}

privatefunctiontransmitNews($object,$newsArray)
{
if(!is_array($newsArray)){
return"";
}
$itemTpl="<item>
<Title><![CDATA[%s]]></Title>
<Description><![CDATA[%s]]></Description>
<PicUrl><![CDATA[%s]]></PicUrl>
<Url><![CDATA[%s]]></Url>
</item>
";
$item_str="";
foreach($newsArrayas$item){
$item_str.=sprintf($itemTpl,$item['Title'],$item['Description'],$item['PicUrl'],$item['Url']);
}
$newsTpl="<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[news]]></MsgType>
<Content><![CDATA[]]></Content>
<ArticleCount>%s</ArticleCount>
<Articles>
$item_str</Articles>
</xml>";

$result=sprintf($newsTpl,$object->FromUserName,$object->ToUserName,time(),count($newsArray));
return$result;
}

privatefunctionlogger($log_content)
{

}
}
?>