<?php
/*方倍工作室CopyRight 2013 All Rights Reserved
*/define("TOKEN", "weixin");$wechatObj = new wechatCallbackapiTest();
if (!isset($_GET['echostr'])) {$wechatObj->responseMsg();
}else{$wechatObj->valid();
}class wechatCallbackapiTest
{public function valid(){$echoStr = $_GET["echostr"];if($this->checkSignature()){echo $echoStr;exit;}}private function checkSignature(){$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 == $signature){return true;}else{return false;}}public function responseMsg(){$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];if (!empty($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 "event":$resultStr = $this->receiveEvent($postObj);break;default:$resultStr = "";break;}echo $resultStr;}else {echo "";exit;}}private function receiveText($object){$keyword = trim($object->Content);$url = "http://api100.duapp.com/history/?appkey=trialuser";$output = file_get_contents($url);$contentStr = json_decode($output, true);if (is_array($contentStr)){$resultStr = $this->transmitNews($object, $contentStr);}else{$resultStr = $this->transmitText($object, $contentStr);}return $resultStr;}private function receiveEvent($object){$contentStr = "";switch ($object->Event){case "subscribe":$contentStr = "欢迎关注方倍工作室";break;default:break;}$resultStr = $this->transmitText($object, $contentStr);return $resultStr;}private function transmitText($object, $content){$textTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[text]]></MsgType>
<Content><![CDATA[%s]]></Content>
</xml>";$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content);return $resultStr;}private function transmitNews($object, $arr_item){if(!is_array($arr_item))return;$itemTpl = "    <item><Title><![CDATA[%s]]></Title><Description><![CDATA[%s]]></Description><PicUrl><![CDATA[%s]]></PicUrl><Url><![CDATA[%s]]></Url></item>
";$item_str = "";foreach ($arr_item as $item)$item_str .= sprintf($itemTpl, $item['Title'], $item['Description'], $item['PicUrl'], $item['Url']);$newsTpl = "<xml>
<ToUserName><![CDATA[%s]]></ToUserName>
<FromUserName><![CDATA[%s]]></FromUserName>
<CreateTime>%s</CreateTime>
<MsgType><![CDATA[news]]></MsgType>
<Content><![CDATA[]]></Content>
<ArticleCount>%s</ArticleCount>
<Articles>
$item_str</Articles>
</xml>";$resultStr = sprintf($newsTpl, $object->FromUserName, $object->ToUserName, time(), count($arr_item));return $resultStr;}
}
?>