php微信开发之图片回复功能

本文实例为大家分享了php微信图片回复功能的具体代码，供大家参考，具体内容如下

valid();
$wechatObj->responseMsg();
class wechatCallbackapiTest
{
  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
    $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

    //extract post data
    if (!empty($postStr)){

 $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
 $fromUsername = $postObj->FromUserName;
 $toUsername = $postObj->ToUserName;
 $type = $postObj->MsgType;
 $customrevent = $postObj->Event;
 $keyword = trim($postObj->Content);
 $time = time();
 $textTpl = "


%s


0
";
 if($type=="event" and $customrevent=="subscribe"){
   $contentStr = "33333333333";
   $msgType = "text";
   $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
   echo $resultStr;
   }  
 if($type=="image" ){
   $contentStr = "你的图片很棒！";
   $msgType = "text";
   $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
   echo $resultStr;
   }  

 if(!empty( $keyword ))
 {  
   $msgType = "text";
   if($keyword=="1"){
   $contentStr = "333";}
   if($keyword=="2"){
   $contentStr = "444
   if($keyword=="3"){
   $contentStr = "11";}   
   $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
   echo $resultStr;
 }else{
   echo "Input something...";
 }

    }else {
      echo "";
      exit;
    }
  }

  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;
    }
  }
}

?>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。