微信接口封装类(PHP)

<?php
/**
  * 微信公众平台接口PHP100封装功能类文件
  * author PHP100.com  张恩民
  * date 2013-4-9 PRC:E+8 23:03
  * linkme QQ925939 chuangen.com
  */
 
define("TOKEN", "chuangenit");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->weixin_run(); //执行接收器方法
 
class wechatCallbackapiTest
{
   private $fromUsername;
   private $toUsername;
   private $times;
   private $keyword;
   
   
   public function weixin_run(){
     $this->responseMsg();
$arr[]=array("创恩很靠谱，PHP100也不错！","aa","http://www.chuangen.com/pic/hj/s_4.png","http://www.chuangen.com");
$arr[]=array("创恩很靠谱，PHP100也不错！","aa","http://www.chuangen.com/pic/hj/s_4.png","http://www.chuangen.com");
$arr[]=array("创恩很靠谱，PHP100也不错！","aa","http://www.chuangen.com/pic/hj/s_4.png","http://www.chuangen.com");
$this->fun_xml("news",$arr,array(2,0)); 
   }
   
   
  function t($n){
   include("t_api.php");
   $c_name=$t_api[$n];
   $json=file_get_contents("http://m.weather.com.cn/data/101110310.html");
   return json_decode($json);
  }
   
   
   
public function valid()
    {
        $echoStr = $_GET["echostr"];
 
        //valid signature , option
        if($this->checkSignature()){
         echo $echoStr;
         exit;
        }
    }
 
    public function responseMsg()
    {
$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
if (!empty($postStr)){
               $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $this->fromUsername = $postObj->FromUserName;
                $this->toUsername = $postObj->ToUserName;
                $this->keyword = trim($postObj->Content);
$this->times = time();
        }else {
         echo "this a file for weixin API!";
         exit;
        }
    }
 
//微信封装类,
//type: text 文本类型, news 图文类型
//text,array(内容),array(ID)
//news,array(array(标题,介绍,图片,超链接),...小于10条),array(条数,ID)
 
private function fun_xml($type,$value_arr,$o_arr=array(0)){
 //=================xml header============
 $con="<xml>
<ToUserName><![CDATA[{$this->fromUsername}]]></ToUserName>
<FromUserName><![CDATA[{$this->toUsername}]]></FromUserName>
<CreateTime>{$this->times}</CreateTime>
<MsgType><![CDATA[{$type}]]></MsgType>";
 
      //=================type content============
 switch($type){
 
   case "text" : 
 $con.="<Content><![CDATA[{$value_arr[0]}]]></Content>
<FuncFlag>{$o_arr}</FuncFlag>";  
break;
 
case "news" : 
 $con.="<ArticleCount>{$o_arr[0]}</ArticleCount>
<Articles>";
foreach($value_arr as $id=>$v){
if($id>=$o_arr[0]) break; else null; //判断数组数不超过设置数
         $con.="<item>
<Title><![CDATA[{$v[0]}]]></Title> 
<Description><![CDATA[{$v[1]}]]></Description>
<PicUrl><![CDATA[{$v[2]}]]></PicUrl>
<Url><![CDATA[{$v[3]}]]></Url>
</item>";
}
$con.="</Articles>
<FuncFlag>{$o_arr[1]}</FuncFlag>";  
break;
 
 } //end switch
 
//=================end return============
 echo $con."</xml>";
}
 
 
 
private function checkSignature()
{
        $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 ){
return true;
}else{
return false;
}
}
}
 
?>