9-STM32物联网开发WIFI(ESP8266)+GPRS(Air202)系统方案微信小程序篇(微信配网配置_开发者基本配置_2)

<?php  

//http://localhost:63343/lesson2/lesson2.php?timestamp=1&nonce=2&signature=3
//1. 将timestamp , nonce , token 按照字典排序
$timestamp = $_GET[‘timestamp‘];
$nonce = $_GET[‘nonce‘];
$token = "mnifdv";
$signature = $_GET[‘signature‘];
$array = array($timestamp, $nonce, $token);
sort($array);

//2.将排序后的三个参数拼接后用sha1加密
$tmpstr = implode(‘‘, $array);
$tmpstr = sha1($tmpstr);

//3. 将加密后的字符串与 signature 进行对比, 判断该请求是否来自微信
if ($tmpstr == $signature) {
    header(‘content-type:text‘);
    echo $_GET[‘echostr‘];
    exit;
}
else {
    echo "";
}