jssdk.php

/** * Created by PhpStorm. * Date: 17/8/19 * Time: 下午2:24 */class JSSDK { ???private $appId; ???private $appSecret; ???public function __construct($appId, $appSecret) { ???????$this->appId = $appId; ???????$this->appSecret = $appSecret; ???} ???public function getSignPackage() { ???????$jsapiTicket = $this->getJsApiTicket(); ???????// 注意 URL 一定要动态获取，不能 hardcode. ???????$protocol = (!empty($_SERVER[‘HTTPS‘]) && $_SERVER[‘HTTPS‘] !== ‘off‘ || $_SERVER[‘SERVER_PORT‘] == 443) ? "https://" : "http://"; ???????$url = "$protocol$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; ???????$timestamp = time(); ???????$nonceStr = $this->createNonceStr(); ???????// 这里参数的顺序要按照 key 值 ASCII 码升序排序 ???????$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 $signPackage; ???} ???private function createNonceStr($length = 16) { ???????$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; ???????$str = ""; ???????for ($i = 0; $i < $length; $i++) { ???????????$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); ???????} ???????return $str; ???} ???private function getJsApiTicket() { ???????// jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例 ???????$data = json_decode(file_get_contents("./jsapi_ticket.json")); ???????if (!empty($data->expire_time)&&$data->expire_time < time()) { ???????????$accessToken = $this->getAccessToken(); ???????????// 如果是企业号用以下 URL 获取 ticket ????????????//$url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken"; ???????????$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 = $ticket; ???????????????$fp = fopen("./jsapi_ticket.json", "w"); ???????????????fwrite($fp, json_encode($data)); ???????????????fclose($fp); ???????????} ???????} else { ???????????$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(file_get_contents("./access_token.json")); ???????if ($data->expire_time < time()) { ???????????// 如果是企业号用以下URL获取access_token ????????????//$url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret"; ???????????$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$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 = $access_token; ???????????????$fp = fopen("./access_token.json", "w"); ???????????????fwrite($fp, json_encode($data)); ???????????????fclose($fp); ???????????} ???????} else { ???????????$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, false); ???????curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false); ???????curl_setopt($curl, CURLOPT_URL, $url); ???????$res = curl_exec($curl); ???????curl_close($curl); ???????return $res; ???}}