PHP后端 H5页面 打开微信小程序

    /**
     * 功能：获取小程序access_token
     * Author：郑康凯
     * Date: 2023/2/6 0006 15:14
     */
    public function hhsGetAccessToken()
    {
        // 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
        // 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";
        $SCHOOL_HOST=CD('SCHOOL_HOST');
        //if($_SERVER['SERVER_NAME']==$SCHOOL_HOST){
        if(1){
            $where['config_name'] = array('eq', 'H_Access_Token');
            $access_token_info    = M('config')->where($where)->find();
            $thetime              = $access_token_info['config_time'] + 7000;
            if ($thetime < time() || empty($access_token_info['config_value'])) {
　　　　　　　　　　//获取小程序access_token方法
                $url          = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=" . CD('H_AppID') . "&secret=" . CD('H_AppSecret');
                $res          = json_decode(httpPost($url));
                $access_token = $res->access_token;

                // 保存tocken
                $data['config_value'] = $access_token;
                $data['config_time']  = time();

                if (empty($access_token_info)) {
                    $data['config_name'] = 'H_Access_Token';
                    M('config')->add($data);
                } else {
                    M('config')->where($where)->save($data);
                }

                return $access_token;
            } else {
                return $access_token_info['config_value'];
            }
        }else{
            return false;
        }

    }
　　//获取小程序生成短链
    public function getUrlLInk(){
        $url = 'https://api.weixin.qq.com/wxa/generate_urllink?access_token='.$this->hhsGetAccessToken();
        $data='{"path": "/pages/tabbars/main/main","query": "","is_expire":true,"expire_type":0,"expire_interval":1,"env_version": "release"} ';
        $res = json_decode($this->httpPost($url,true,'POST',$data),true);
        $href_url=$res['url_link'];
        Header("HTTP/1.1 303 See Other");
        Header("Location:$href_url ");
        exit;
    }
    /**
     *  发送httpPost
     * @param $curl
     * @param bool $https
     * @param string $method
     * @param null $data
     * @return mixed
     */
    function httpPost($curl, $https = true, $method = 'GET', $data = null)
    {
        $ch = curl_init(); // 初始化curl
        curl_setopt($ch, CURLOPT_URL, $curl); //设置访问的 URL
        curl_setopt($ch, CURLOPT_HEADER, false); //放弃 URL 的头信息
//    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); //请求时间限制（s）
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); //返回字符串，而不直接输出
        if ($https) { //判断是否是使用 https 协议
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //不做服务器的验证
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //做服务器的证书验证
        }
        if ($method == 'POST') { //是否是 POST 请求
            curl_setopt($ch, CURLOPT_POST, true); //设置为 POST 请求
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data); //设置POST的请求数据
            curl_setopt($ch,CURLOPT_HTTPHEADER,array(
                'Content-Type:application/json'
            ));
        }
        $content = curl_exec($ch); //开始访问指定URL
        $request_header = curl_getinfo( $ch, CURLINFO_HEADER_OUT);
        curl_close($ch); //关闭 cURL 释放资源
        return $content;
    }