111 lines
3.0 KiB
PHP
111 lines
3.0 KiB
PHP
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<?php
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namespace addons\epay\library;
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use fast\Http;
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use think\Cache;
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use think\Session;
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/**
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* 微信授权
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*
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*/
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class Wechat
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{
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private $app_id = '';
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private $app_secret = '';
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private $scope = 'snsapi_userinfo';
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public function __construct($app_id, $app_secret)
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{
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$this->app_id = $app_id;
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$this->app_secret = $app_secret;
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}
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/**
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* 获取微信授权链接
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*
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* @return string
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*/
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public function getAuthorizeUrl()
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{
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$redirect_uri = addon_url('epay/api/wechat', [], true, true);
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$redirect_uri = urlencode($redirect_uri);
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$state = \fast\Random::alnum();
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Session::set('state', $state);
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return "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$this->app_id}&redirect_uri={$redirect_uri}&response_type=code&scope={$this->scope}&state={$state}#wechat_redirect";
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}
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/**
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* 获取微信openid
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*
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* @return mixed|string
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*/
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public function getOpenid()
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{
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$openid = Session::get('openid');
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if (!$openid) {
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if (!isset($_GET['code'])) {
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$url = $this->getAuthorizeUrl();
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Header("Location: $url");
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exit();
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} else {
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$state = Session::get('state');
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if ($state == $_GET['state']) {
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$code = $_GET['code'];
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$token = $this->getAccessToken($code);
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if (!isset($token['openid']) && isset($token['errmsg'])) {
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exception($token['errmsg']);
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}
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$openid = $token['openid'] ?? '';
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if ($openid) {
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Session::set("openid", $openid);
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}
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}
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}
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}
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return $openid;
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}
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/**
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* 获取授权token网页授权
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*
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* @param string $code
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* @return mixed|string
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*/
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public function getAccessToken($code = '')
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{
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$params = [
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'appid' => $this->app_id,
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'secret' => $this->app_secret,
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'code' => $code,
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'grant_type' => 'authorization_code'
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];
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$ret = Http::sendRequest('https://api.weixin.qq.com/sns/oauth2/access_token', $params, 'GET');
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if ($ret['ret']) {
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$ar = json_decode($ret['msg'], true);
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return $ar;
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}
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return [];
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}
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public function getJsticket($code = '')
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{
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$jsticket = Session::get('jsticket');
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if (!$jsticket) {
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$token = $this->getAccessToken($code);
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$params = [
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'access_token' => 'token',
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'type' => 'jsapi',
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];
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$ret = Http::sendRequest('https://api.weixin.qq.com/cgi-bin/ticket/getticket', $params, 'GET');
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if ($ret['ret']) {
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$ar = json_decode($ret['msg'], true);
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return $ar;
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}
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}
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return $jsticket;
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}
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}
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