125 lines
4.8 KiB
PHP
125 lines
4.8 KiB
PHP
<?php namespace Phpcmf\Library;
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class Jssdk {
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private $weixin;
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private $appId;
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private $appSecret;
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public function __construct() {
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$this->weixin = \Phpcmf\Service::C()->get_cache('weixin'); // 配置
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$this->appId = $this->weixin['account']['appid'];
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$this->appSecret = $this->weixin['account']['appsecret'];
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}
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public function getSignPackage() {
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$jsapiTicket = $this->getJsApiTicket();
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// 注意 URL 一定要动态获取，不能 hardcode.
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$protocol = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off' || $_SERVER['SERVER_PORT'] == 443) ? "https://" : "http://";
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$url = $protocol.$_SERVER['HTTP_HOST'].$_SERVER['REQUEST_URI'];
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$timestamp = time();
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$nonceStr = $this->createNonceStr();
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// 这里参数的顺序要按照 key 值 ASCII 码升序排序
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$string = "jsapi_ticket=$jsapiTicket&noncestr=$nonceStr×tamp=$timestamp&url=$url";
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$signature = sha1($string);
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$signPackage = array(
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"appId" => $this->appId,
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"nonceStr" => $nonceStr,
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"timestamp" => $timestamp,
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"url" => $url,
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"signature" => $signature,
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"rawString" => $string
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);
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return $signPackage;
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}
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private function createNonceStr($length = 16) {
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$chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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$str = "";
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for ($i = 0; $i < $length; $i++) {
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$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
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}
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return $str;
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}
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private function getJsApiTicket() {
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// jsapi_ticket 应该全局存储与更新，以下代码以写入到文件中做示例
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$data = json_decode($this->get_php_file("jsapi_ticket.php"));
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if (!$data || $data->expire_time < SYS_TIME) {
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$accessToken = $this->getAccessToken();
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// 如果是企业号用以下 URL 获取 ticket
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// $url = "https://qyapi.weixin.qq.com/cgi-bin/get_jsapi_ticket?access_token=$accessToken";
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$url = "https://api.weixin.qq.com/cgi-bin/ticket/getticket?type=jsapi&access_token=$accessToken";
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$res = json_decode($this->httpGet($url));
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$ticket = $res->ticket;
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if ($ticket) {
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$data = [
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'expire_time' => SYS_TIME + 7000,
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'jsapi_ticket' => $ticket
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];
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$this->set_php_file("jsapi_ticket.php", json_encode($data));
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}
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} else {
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$ticket = $data->jsapi_ticket;
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}
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return $ticket;
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}
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private function getAccessToken() {
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// access_token 应该全局存储与更新，以下代码以写入到文件中做示例
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$data = json_decode($this->get_php_file("access_token.php"));
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if (!$data || $data->expire_time < SYS_TIME) {
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// 如果是企业号用以下URL获取access_token
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// $url = "https://qyapi.weixin.qq.com/cgi-bin/gettoken?corpid=$this->appId&corpsecret=$this->appSecret";
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$url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=$this->appId&secret=$this->appSecret";
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$res = json_decode($this->httpGet($url));
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$access_token = $res->access_token;
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if ($access_token) {
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$data = [
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'expire_time' => SYS_TIME + 7000,
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'access_token' => $access_token
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];
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$this->set_php_file("access_token.php", json_encode($data));
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}
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} else {
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$access_token = $data->access_token;
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}
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return $access_token;
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}
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private function httpGet($url) {
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$curl = curl_init();
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curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($curl, CURLOPT_TIMEOUT, 500);
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// 为保证第三方服务器与微信服务器之间数据传输的安全性，所有微信接口采用https方式调用，必须使用下面2行代码打开ssl安全校验。
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// 如果在部署过程中代码在此处验证失败，请到 http://curl.haxx.se/ca/cacert.pem 下载新的证书判别文件。
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if (substr($url, 0, 8) == "https://") {
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curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // 跳过证书检查
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curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true); // 从证书中检查SSL加密算法是否存在
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}
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curl_setopt($curl, CURLOPT_URL, $url);
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$res = curl_exec($curl);
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curl_close($curl);
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return $res;
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}
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private function get_php_file($filename) {
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return trim(substr(file_get_contents(WRITEPATH.'temp/'.$filename), 15));
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}
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private function set_php_file($filename, $content) {
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$fp = fopen(WRITEPATH.'temp/'.$filename, "w");
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fwrite($fp, "<?php exit();?>" . $content);
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fclose($fp);
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}
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}
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