问题模块 框架类型 操作时间 AppID
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public function index(){

$token = 'token';
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$signature = $_GET["signature"];
$echostr = $_GET["echostr"];

$tmpArr = array($token, $timestamp, $nonce);

sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );

if( $tmpStr == $signature ){
echo $echostr;
}else{
echo false;
}
}