http://www.php.net/manual/zh/control-structures.switch.php

文档上说：

允许使用分号代替 case 语句后的冒号，例如：

<?php
switch($beer)
{case 'tuborg';case 'carlsberg';case 'heineken';echo 'Good choice';break;default;echo 'Please make a new selection...';break;
}
?>

我还以为 微信公众平台搭建与开发揭秘 书上的示例代码错了呢……留念：

<?php
/*** wechat php test*///define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
//$wechatObj->valid();
$wechatObj->responseMsg();
class wechatCallbackapiTest
{public function valid(){$echoStr = $_GET["echostr"];//valid signature , optionif($this->checkSignature()){echo $echoStr;exit;}}public function responseMsg(){//get post data, May be due to the different environments$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];//extract post dataif (!empty($postStr)){$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);$fromUsername = $postObj->FromUserName;$toUsername = $postObj->ToUserName;$type = $postObj->MsgType;$customevent = $postObj->Event;$latitude  = $postObj->Location_X;$longitude = $postObj->Location_Y;$keyword = trim($postObj->Content);$time = time();$textTpl = "<xml><ToUserName><![CDATA[%s]]></ToUserName><FromUserName><![CDATA[%s]]></FromUserName><CreateTime>%s</CreateTime><MsgType><![CDATA[%s]]></MsgType><Content><![CDATA[%s]]></Content><FuncFlag>0</FuncFlag></xml>";             switch ($type){   case "event";if ($customevent=="subscribe"){$contentStr = "感谢你的关注\n回复1查看联系方式\n回复2查看最新资讯\n回复3查看法律文书";}break;case "image";$contentStr = "你的图片很棒！";break;case "location";$contentStr = "你的纬度是{$latitude},经度是{$longitude},我已经锁定！";break;case "link" ;$contentStr = "你的链接有病毒吧！";break;case "text";switch($keyword){case "1";                                 $contentStr = "联系方式：汕头市金平区华乾大厦703,1341702551，           email：30090032@qq.com";break;case "2";$contentStr = "最新资讯：《汕头市环境违法行为举报奖励办法》将于8月1日实施。";break;case "3";$contentStr = "31离婚协议\n32租房合同\n33交通事故协议书";break;default;$contentStr ="hi";}break;                 default;$contentStr ="此项功能尚未开发"; }$msgType="text";$resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);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;}}
}?>