PHP 위 챗 API 인터페이스 클래스

<?php
/**
 * wechat php test
 */
 
//define your token
//  TOKEN  
define("TOKEN", "weixin");
 
//       
$wechatObj = new wechatCallbackapiTest();
//       valid  
//$wechatObj->valid();
//        
$wechatObj->responseMsg();
 
 
//     
class wechatCallbackapiTest
{
  //  valid    :          
  public function valid()
  {
    //       
    $echoStr = $_GET["echostr"];
 
    //valid signature , option
    //          
    if($this->checkSignature()){
      //    ,            
      echo $echoStr;
      //  
      exit;
    }
  }
  //        
  public function responseMsg()
  {
    //get post data, May be due to the different environments
    //          xml  
    $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
 
    //extract post data
    //  xml      
    if (!empty($postStr)){
        /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
          the best way is to check the validity of xml by yourself */
        libxml_disable_entity_loader(true);
        //  simplexml  xml  
        $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        //        
        $fromUsername = $postObj->FromUserName;
        //      
        $toUsername = $postObj->ToUserName;
        //          
        $keyword = trim($postObj->Content);
        //1.        
        $msgType = $postObj -> MsgType;
        //   
        $time = time();
        //      
        $textTpl = "<xml>
              <ToUserName><![CDATA[%s]]></ToUserName>
              <FromUserName><![CDATA[%s]]></FromUserName>
              <CreateTime>%s</CreateTime>
              <MsgType><![CDATA[%s]]></MsgType>
              <Content><![CDATA[%s]]></Content>
              <FuncFlag>0</FuncFlag>
              </xml>"; 
        //////////////////////////////////////////////////////////////////////////////////
        //              ,    
        if($msgType == 'text'){
          if(!empty( $keyword ))
          {
            /*      
              //        
              $msgType = "text";
              //    
              if($keyword == "  "){
                $contentStr = "    ";
              }else{
                $contentStr = "    ";
              }
              //   xml  ,              .fromUsername  Username    ,   %s 
              $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
 
              // xml        
              echo $resultStr;
            */
            if($keyword == "?" || $keyword == "？"){
              $msgType = "text";
              $contentStr = "1.      
2.      ";
              $resultStr = sprintf($textTpl,$fromUsername,$toUsername,$time,$msgType,$contentStr);
              echo $resultStr;
            }elseif($keyword == 1){
              $msgType = "text";
              $contentStr = "1.  :110
2.  :119
3.  :120";
              $resultStr = sprintf($textTpl,$fromUsername,$toUsername,$time,$msgType,$contentStr);
              echo $resultStr;
            }elseif($keyword == 2){
              $msgType = "text";
              $contentStr = "1.    :10086
2.    :10010";
              $resultStr = sprintf($textTpl,$fromUsername,$toUsername,$time,$msgType,$contentStr);
              echo $resultStr;
            }
          }else{
            echo "     ";
          }
        }
        ////////////////////////////////////////////////////////////////////////////////////
        //      
        if($msgType == "image"){
            //        
            $msgType = "text";
            //    
            $contentStr = "         ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        if($msgType == "voice"){
            //        
            $msgType = "text";
            //    
            $contentStr = "         ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        if($msgType == "video"){
            //        
            $msgType = "text";
            //    
            $contentStr = "         ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        if($msgType == "shortvideo"){
            //        
            $msgType = "text";
            //    
            $contentStr = "          ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        if($msgType == "location"){
            //        
            $msgType = "text";
            //    
            $contentStr = "           ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        if($msgType == "link"){
            //        
            $msgType = "text";
            //    
            $contentStr = "         ";
            //      
            $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
            // xml        
            echo $resultStr;
        }
        ////////////////////////////////////////////////////////////////////////////////////
        /*
        //                   
         
        if(!empty( $keyword ))
        {
          //        
          $msgType = "text";
          //    
          $contentStr = "   ,  hero";
          //      
          $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
          // xml        
          echo $resultStr;
        }else{
          echo "Input something...";
        }
        */
    }else {
      echo "";
      exit;
    }
  }
     
  private function checkSignature()
  {
    // you must define TOKEN by yourself
    //       TOKEN,           
    if (!defined("TOKEN")) {
      throw new Exception('TOKEN is not defined!');
    }
     
    $signature = $_GET["signature"];//        
    $timestamp = $_GET["timestamp"];//     
    $nonce = $_GET["nonce"];//     
         
    $token = TOKEN;// TOKEN     $token
    //          
    $tmpArr = array($token, $timestamp, $nonce);
    // use SORT_STRING rule
    //  
    sort($tmpArr, SORT_STRING);
    //             
    $tmpStr = implode( $tmpArr );
    //        
    $tmpStr = sha1( $tmpStr );
    //         
    if( $tmpStr == $signature ){
      //    true
      return true;
    }else{
      //    false
      return false;
    }
  }
}
 
?>