在自己的服务器上新建一个空白php文件，输入以下代码
<?php
$token = "sinpark";
$signature = $_GET["signature"];
$timestamp = $_GET["timestamp"];
$nonce = $_GET["nonce"];
$echostr = $_GET["echostr"];
$tmpArr = array($token, $timestamp, $nonce);
sort($tmpArr);
$tmpStr = implode( $tmpArr );
$tmpStr = sha1( $tmpStr );
if($tmpStr == $signature ){
echo $echostr;
}else{
echo "err";
}
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