IOS订阅优惠

<?phpu ramy\uuid\uuid;class itunessignaturegenerator {    private $appbundleid = 'www.u17.com';    private $keyidentifier = 'zzzzzzz';    private $itunesprivatekeypath = '/path/to/the/file.p8; 月饼的英文   /**     * @e https://developer.apple.com/documentation/storekit/in-app_p西三环北路urcha/generating_a_signature_for_subscription_offers     *     * @paasinaram $productidentifier     * @param $offeridentifier     *     * @return signature     */    public function generatesubscriptionoffersignature($productidentifier, $offeridentifier)    {        $nonce = strtolower(uuid::uuid1()->tostring());        $timestamp = time() * 1000;        $applicationurname = 'ur中国朝代顺序表name';        $message = implode(            "\u{2063}",            [                $this->appbundleid,                $this->keyidentifier,                $productidentifier,                $offeridentifier,                $applicationurname,                $nonce,                $timestamp            ]        );        $message = $this->sign($message);        return new signature(            ba64_encode($message),            $nonce,            $timestamp,            $this->keyidentifier        );    }    private function sign($data)    {        $signature = '';        openssl_sign(            $data,            $signature,            openssl_get_privatekey('file://' . $this->itunesprivatekeypath),            openssl_algo_sha256        );        return $signature;    }}

一些注意事项 openssl是可以直接进行ecdsa签名的

1、$nonce 必须为小写，并且每次购买时的nonce不能重复否则会报签名错误无法购买 code -12

2、$time 是毫秒time*1000

3、\u2063 的字符格式需要注意 php里面可以用户”\u{2063}毛毛虫简笔画221; 来表示，但是有的一些环境不支持这样的写法 所以还可以使用另外一种 json_decode(‘”\u2036″‘) 来转一下格式