科技猎微信公众平台入门开发第四章：接收用户消息
定义消息类型处理函数
在接收到的消息中根据消息类型，定义不同的消息处理函数，
public function responseMsg()
{
$postStr = $GLOBALS["HTTP_RAW_POST_D
ATA
"];
if (!empty($postStr)){
$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
$RX_TYPE = trim($postObj->MsgType);
switch ($RX_TYPE)
{
case "text":
$resultStr = $this->receiveText($postObj);
break;
case "image":
$resultStr = $this->receiveImage($postObj);
break;
case "location":
$resultStr = $this->receiveLocation($postObj);
break;
case "voice":
$resultStr = $this->receiveVoice($postObj);
break;
case "video":
$resultStr = $this->receiveVideo($postObj);
break;
case "link":
$resultStr = $this->receiveLink($postObj);
break;
case "event":
$resultStr = $this->receiveEvent($postObj);
break;
default:
$resultStr = "unknow msg type: ".$RX_TYPE;
break;
}
echo $resultStr;
}else {
echo "";
exit;
}
}
定义并实现回复函数
在这里，我们先全部用文本消息回复实现
private function transmitText($object, $content, $flag = 0)
{
$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
<FuncFlag>%d</FuncFlag>
</xml>";
$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag);
return $resultStr;
}
各种消息类型函数实现
1、事件消息
private function receiveEvent($object)
{
$contentStr = "";
switch ($object->Event)
{
case "subscribe":
$contentStr = "欢迎关注方倍工作室";
break;
case "unsubscribe":
$contentStr = "";
break;
case "CLICK":
switch ($object->EventKey)
{
default:
$contentStr = "你点击了菜单: ".$object->EventKey;
break;
}
break;
default:
$contentStr = "receive a new event: ".$object->Event;
break;
}
$resultStr = $this->transmitText($object, $contentStr);
return $resultStr;
}
效果展示：
![]()
微信
教材" src="http://img.pintu360.com/wp-content/uploads/2014/03/24214641-d0e553e3ef664776aa1fe127ff57e54e.jpg" width="320" height="480" />
2、文本消息
private function receiveText($object)
{
$funcFlag = 0;
$contentStr = "你发送的是文本，内容为：".$object->Content;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
效果展示：
3、图片消息
private
function
receiveImage(
$object
)
{
$funcFlag
= 0
;
$contentStr
= "你发送的是图片，地址为：".
$object
->
PicUrl;
$resultStr
=
$this
->transmitText(
$object
,
$contentStr
,
$funcFlag
);
return
$resultStr
;
}
效果展示：
4、语音消息
private function receiveVoice($object)
{
$funcFlag = 0;
$contentStr = "你发送的是语音，媒体ID为：".$object->MediaId;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
效果展示：
5、视频消息
private function receiveVideo($object)
{
$funcFlag = 0;
$contentStr = "你发送的是视频，媒体ID为：".$object->MediaId;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
效果展示：
6、位置消息
private function receiveLocation($object)
{
$funcFlag = 0;
$contentStr = "你发送的是位置，纬度为：".$object->Location_X."；经度为：".$object->Location_Y."；缩放级别为：".$object->Scale."；位置为：".$object->Label;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
效果展示：
7、链接消息
private function receiveLink($object)
{
$funcFlag = 0;
$contentStr = "你发送的是链接，标题为：".$object->Title."；内容为：".$object->Description."；链接地址为：".$object->Url;
$resultStr = $this->transmitText($object, $contentStr, $funcFlag);
return $resultStr;
}
效果展示：
品途专栏作者：方倍
责编：杜航
