核心代码：
$tyep= $postObj->MsgType; $textTpl = " <xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[text]]></MsgType> <Content><![CDATA[%s]]></Content> <FuncFlag>0</FuncFlag> </xml>"; if ($tyep=="image") { $a=rand(1,3); switch ($a) { case "1"; $b="健康好人缘，婚姻幸福美满"; break; case "2"; $b="贵人相助化险为夷的好运纹"; break; default; $b="才华横溢好研究，知识丰富事业有成"; } $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$b); echo $resultStr; }
index.php代码如下：
<?php /** * wechat php test */ //define your token define("TOKEN", "weixin"); $wechatObj = new wechatCallbackapiTest(); $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; $keyword = trim($postObj->Content); $time = time(); $tyep= $postObj->MsgType; $textTpl = " <xml> <ToUserName><![CDATA[%s]]></ToUserName> <FromUserName><![CDATA[%s]]></FromUserName> <CreateTime>%s</CreateTime> <MsgType><![CDATA[text]]></MsgType> <Content><![CDATA[%s]]></Content> <FuncFlag>0</FuncFlag> </xml>"; if ($tyep=="image") {$a=rand(1,3); switch ($a) {case "1"; $b="健康好人缘，婚姻幸福美满"; break; case "2"; $b="贵人相助化险为夷的好运纹"; break; default; $b="才华横溢好研究，知识丰富事业有成"; } $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time,$b); echo $resultStr; } }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; } } } ?>