<?php
define('SECRET_KEY', 'b693013c19222873eece0526b7b85da2');
if (!function_exists('getallheaders')) {
    function getallheaders()
    {
        $headers = [];
        foreach ($_SERVER as $name => $value) {
            if (substr($name, 0, 5) == 'HTTP_') {
                $headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
            }
        }
        return $headers;
    }
}
$headers = getallheaders();

function validSign()
{
    // print_r($request->all());exit;
    $sign = isset($_POST['sign']) ? $_POST['sign'] : null;
    $time = isset($_POST['time']) ? $_POST['time'] : 0;
    $time = time() - $time;
    if (empty($sign) || $time >= 600) {
        return false;
    }
    $makesign = getSignature($_POST, SECRET_KEY);
    if ($makesign == $sign) {
        return true;
    }
    return false;
}

function getSignature($params, $secret_key)
{
    // 按数组键名 正序排序
    ksort($params);
    $tem = array();
    foreach ($params as $k => $v) {
        if ($k !== 'sign') {
            $tem[] = "$k=$v";
        }
    }
    $sk      = implode('&', $tem) . $secret_key;
    $a['mm'] = $sk;
    return md5($sk);
}
function versionCompare($version1, $operator, $version2)
{
    $_fv = intval(trim(str_replace('.', '', $version1)));
    $_sv = intval(trim(str_replace('.', '', $version2)));

    if (strlen($_fv) > strlen($_sv)) {
        $_sv = str_pad($_sv, strlen($_fv), 0);
    }

    if (strlen($_fv) < strlen($_sv)) {
        $_fv = str_pad($_fv, strlen($_sv), 0);
    }
    return version_compare((string) $_fv, (string) $_sv, $operator);
}
$url = isset($_SERVER['REQUEST_URI']) ? $_SERVER['REQUEST_URI'] : null;
//todo  sign验证
//if (!validSign()) {
//    $data              = [];
//    $data['rst']       = ["data" => "illegal request"];
//    $data['errno']     = 1008;
//    $data['err']       = "非法请求";
//    $data['timestamp'] = time();
//    exit(json_encode($data));
//}