<?php /* 洋洋的博客 */ define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); if (isset($_GET['echostr'])) { $wechatObj->valid(); }else{ $wechatObj->responseMsg(); } class wechatCallbackapiTest { public function valid() { $echoStr = $_GET["echostr"]; if($this->checkSignature()){ header('content-type:text'); echo $echoStr; exit; } } private function checkSignature() { $signature = $_GET["signature"]; $timestamp = $_GET["timestamp"]; $nonce = $_GET["nonce"]; $token = TOKEN; $tmpArr = array($token, $timestamp, $nonce); sort($tmpArr, SORT_STRING); $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); $fromUsername = $postObj->FromUserName; $toUsername = $postObj->ToUserName; $keyword = trim($postObj->Content); $time = time(); $textTpl = "<xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[%s]]></MsgType> <Content><![CDATA[%s]]></Content> <FuncFlag>0</FuncFlag> </xml>"; if($keyword == "?" || $keyword == "？") { $msgType = "text"; $contentStr = '当前时间是：'.date("Y-m-d H:i:s",time()); $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr); echo $resultStr; } }else{ echo ""; exit; } } } ?>