Yii Framework框架开发微信公众平台示例

<?php
/**
* WeixinCallback 
* 
* @package 
* @version $id$
* @copyright 1997-2005 The PHP Group
* @author davidhhuan@126.com
* {@link <a href="http://www.sharefamily.net" rel="external nofollow" target="_blank" http://www.sharefamily.net</a }
*/
class Weixin
{
//$_GET参数
public $signature;
public $timestamp;
public $nonce;
public $echostr;
//
public $token;
public $debug = false;
public $msg = array();
public $setFlag = false;
/**
* __construct 
* 
* @param mixed $params 
* @access public
* @return void
*/
public function __construct($params)
{
foreach ($params as $k1 =  $v1)
{
if (property_exists($this, $k1))
{
$this- $k1 = $v1;
}
}
}
/**
* valid 
* 
* @access public
* @return void
*/
public function valid()
{
//valid signature , option
if($this- checkSignature()){
echo $this- echostr;
Yii::app()- end();
}
}
/**
* 获得用户发过来的消息（消息内容和消息类型 ） 
* 
* @access public
* @return void
*/
public function init()
{
$postStr = empty($GLOBALS["HTTP_RAW_POST_DATA"]) ? '' : $GLOBALS["HTTP_RAW_POST_DATA"];
if ($this- debug) 
{
$this- log($postStr);
}
if (!empty($postStr)) {
$this- msg = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
}
}
/**
* makeEvent 
* 
* @access public
* @return void
*/
public function makeEvent()
{
}
/**
* 回复文本消息 
* 
* @param string $text 
* @access public
* @return void
*/
public function makeText($text='')
{
$createTime = time();
$funcFlag = $this- setFlag ? 1 : 0;
$textTpl = "<xml 
<ToUserName <![CDATA[{$this- msg- FromUserName}]] </ToUserName 
<FromUserName <![CDATA[{$this- msg- ToUserName}]] </FromUserName 
<CreateTime {$createTime}</CreateTime 
<MsgType <![CDATA[text]] </MsgType 
<Content <![CDATA[%s]] </Content 
<FuncFlag %s</FuncFlag 
</xml ";
return sprintf($textTpl,$text,$funcFlag);
}
/**
* 根据数组参数回复图文消息 
* 
* @param array $newsData 
* @access public
* @return void
*/
public function makeNews($newsData=array())
{
$createTime = time();
$funcFlag = $this- setFlag ? 1 : 0;
$newTplHeader = "<xml 
<ToUserName <![CDATA[{$this- msg- FromUserName}]] </ToUserName 
<FromUserName <![CDATA[{$this- msg- ToUserName}]] </FromUserName 
<CreateTime {$createTime}</CreateTime 
<MsgType <![CDATA[news]] </MsgType 
<ArticleCount %s</ArticleCount <Articles ";
$newTplItem = "<item 
<Title <![CDATA[%s]] </Title 
<Description <![CDATA[%s]] </Description 
<PicUrl <![CDATA[%s]] </PicUrl 
<Url <![CDATA[%s]] </Url 
</item ";
$newTplFoot = "</Articles 
<FuncFlag %s</FuncFlag 
</xml ";
$content = '';
$itemsCount = count($newsData['items']);
//微信公众平台图文回复的消息一次最多10条
$itemsCount = $itemsCount < 10 ? $itemsCount : 10;
if ($itemsCount) {
foreach ($newsData['items'] as $key =  $item) {
if ($key<=9) {
$content .= sprintf($newTplItem,$item['title'],$item['description'],$item['picurl'],$item['url']);
}
}
}
$header = sprintf($newTplHeader,$itemsCount);
$footer = sprintf($newTplFoot,$funcFlag);
return $header . $content . $footer;
}
/**
* reply 
* 
* @param mixed $data 
* @access public
* @return void
*/
public function reply($data)
{
if ($this- debug) 
{
$this- log($data);
}
echo $data;
}
/**
* checkSignature 
* 
* @access private
* @return void
*/
private function checkSignature()
{
$tmpArr = array($this- token, $this- timestamp, $this- nonce);
sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if( $tmpStr == $this- signature ){
return true;
}else{
return false;
}
}
/**
* log 
* 
* @access private
* @return void
*/
private function log($log)
{
if ($this- debug)
{
file_put_contents(Yii::getPathOfAlias('application').'/runtime/weixin_log.txt', var_export($log, true)."\n\r", FILE_APPEND);
}
}
}

/**
* actionIndex 
* 
* @access public
* @return void
*/
public function actionIndex()
{
$weixin = new Weixin($_GET);
$weixin- token = $this- _weixinToken;
//$weixin- debug = true;
//网址接入时使用
if (isset($_GET['echostr']))
{
$weixin- valid();
}
$weixin- init();
$reply = '';
$msgType = empty($weixin- msg- MsgType) ? '' : strtolower($weixin- msg- MsgType);
switch ($msgType)
{
case 'text':
//你要处理文本消息代码
break;
case 'image':
//你要处理图文消息代码
break;
case 'location':
//你要处理位置消息代码
break;
case 'link':
//你要处理链接消息代码
break;
case 'event':
//你要处理事件消息代码
break;
default: 
//无效消息情况下的处理方式
break;
}
$weixin- reply($reply);
}