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   appId = config('wxConfig.appid');        $this->appSecret = config('wxConfig.appsecret');    }    public function getSignPackage()    {        $jsapiTicket = $this->getJsApiTicket();        $url = urldecode(input('url'));        $timestamp = time();        //这个是随机数在common里 自己写个吧        $nonceStr = createNonceStr();            // 这里参数的顺序要按照 key 值 ASCII 码升序排序        $string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr&timestamp=$timestamp&url=$url";        $signature = sha1($string);        $signPackage = array(            "appId" => $this->appId,            "nonceStr" => $nonceStr,            "timestamp" => $timestamp,            "url" => $url,            "signature" => $signature,            "rawString" => $string        );        return json($signPackage);    }    private function getJsApiTicket()    {        // jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例        $data = json_decode($this->get_php_file("jsapi_ticket.php"));        if ($data->expire_time < time()) {            $accessToken = $this->getAccessToken();            $url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";            $res = json_decode($this->httpGet($url));            $ticket = $res->ticket;            if ($ticket) {                $data->expire_time = time() + 7000;                $data->jsapi_ticket = $ticket;                $this->set_php_file("jsapi_ticket.php", json_encode($data));            }        } else {            $ticket = $data->jsapi_ticket;        }        return $ticket;    }    private function getAccessToken()    {        // access_token 应该全局存储与更新，以下代码以写入到文件中做示例        $data = json_decode($this->get_php_file("access_token.php"));        if ($data->expire_time < time()) {            $url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";            $res = json_decode($this->httpGet($url));            $access_token = $res->access_token;            if ($access_token) {                $data->expire_time = time() + 7000;                $data->access_token = $access_token;                $this->set_php_file("access_token.php", json_encode($data));            }        } else {            $access_token = $data->access_token;        }        return $access_token;    }    private function httpGet($url)    {        $curl = curl_init();        curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);        curl_setopt($curl, CURLOPT_TIMEOUT, 500);        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true);        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 2);        curl_setopt($curl, CURLOPT_URL, $url);        $res = curl_exec($curl);        curl_close($curl);        return $res;    }    private function get_php_file($filename)    {        return trim(substr(file_get_contents($filename), 15));    }    private function set_php_file($filename, $content)    {        $fp = fopen($filename, "w");        fwrite($fp, "
   " . $content);        fclose($fp);    }}

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