[移动开发]快手小程序预下单 tp6 demo

快手小程序预下单

快手官方文档中只有java的demo，没有php的，只能按照文档中的流程自己写了一个demo，主要注意的是，预下单中的app_id 、access_token 参数并不是一起post过去的，而是拼接到url中
生产sign 是把所有必要签名的参数，去除值为空的参数，然后ASCII 码升序排列处理，具体参考getSign function

控制器代码
<?php
namespace app\controller\api;

use app\BaseController;
use app\model\Banner;
use app\model\Video;
use think\facade\Cache;
use think\facade\Env;

class Ks extends BaseController
{
    /**
     * 获取access_token
     * @param
     * @date    2022/2/22
     */
    public function access_token(){
        $ks_access_token = Cache::store('redis')->get('ks_access_token');
        if(empty($ks_access_token)){
            $url = 'https://open.kuaishou.com/oauth2/access_token';
            $app_id = env('KS.AppID');
            $app_secret = env('KS.AppSecret');
            $data = array(
                'app_id'=>$app_id,
                'app_secret'=>$app_secret,
                'grant_type'=>'client_credentials',
            );
            $result = curl_post($url,$data);
            $result = json_decode($result,true);
            if($result['result'] == 1){
                $ks_access_token = $result['access_token'];
                $expires_in = $result['expires_in'];
                Cache::store('redis')->set('ks_access_token',$ks_access_token,$expires_in);
            }
        }
        $data = array(
            'access_token' => $ks_access_token
        );
        return $this->success('请求成功',$data);
    }


    /**
     * 预下单
     * @param
     * @date    2022/2/22
     */
    public function create_order(){
        $video_id = $this->request->param('video_id/d');
        $open_id = $this->request->param('open_id/s');
        $access_token = $this->getAccessToken();
        $app_id = env('KS.AppID');
        $order_no = time();
        $open_id = "f19d3e538ff1eeef14bf57247a22c2c0";
        $notify_url = 'https://ksvideo.fanshengyun.com';
        $total_amount = 1;
        $data = array(
            'app_id'=>$app_id, //小程序 AppID
            'access_token'=>$access_token, //拥有小程序支付权限的access token
            'out_order_no'=> $order_no, //商户系统内部订单号
            'open_id' =>$open_id, //快手用户在当前小程序的open_id
            'total_amount'=>$total_amount, //用户支付金额，单位为[分]。不允许传非整数的数值
            'subject' => '商品描述', //商品描述。注：1汉字=2字符。
            'detail' => '商品详情', //商品详情。注：1汉字=2字符。
            'type'=> 1233, //商品类型，不同商品类目的编号见 担保支付商品类目编号
            'expire_time'=>172800, //订单过期时间，单位秒，300s - 172800s
            'attach'=>'', //开发者自定义字段，回调原样回传.
            'notify_url'=>$notify_url, //通知URL必须为直接可访问的URL，不允许携带查询串。
            'goods_id'=>1, // 下单商品id，长度限制256个英文字符，1个汉字=2个英文字符；
            'goods_detail_url'=>'', // 订单详情页跳转path。长度限制500个英文字符，1个汉字=2个英文字符; 示例值：/page/index/anima
        );
        $data['sign'] = $this->getSign($data);
        $url = 'https://open.kuaishou.com/openapi/mp/developer/epay/create_order';
        $url .= '?app_id='.$app_id.'&access_token='.$access_token;
        unset($data['app_id']);
        unset($data['access_token']);
        $result = curl_post_json($url,$data);
        $data = json_decode($result,true);
        return $this->success('请求成功',$data);
    }


    /**
     * 获取access_token
     * @param
     * @date    2022/2/22
     */
    public function getAccessToken(){
        $ks_access_token = Cache::store('redis')->get('ks_access_token');
        if(empty($ks_access_token)){
            $url = 'https://open.kuaishou.com/oauth2/access_token';
            $app_id = env('KS.AppID');
            $app_secret = env('KS.AppSecret');
            $data = array(
                'app_id'=>$app_id,
                'app_secret'=>$app_secret,
                'grant_type'=>'client_credentials',
            );
            $result = curl_post($url,$data);
            $result = json_decode($result,true);
            if($result['result'] == 1){
                $ks_access_token = $result['access_token'];
                $expires_in = $result['expires_in'];
                Cache::store('redis')->set('ks_access_token',$ks_access_token,$expires_in);
            }
        }
        $data = array(
            'access_token' => $ks_access_token
        );
        return $ks_access_token;
    }

    /**
     * 获取access_token
     * @param
     * @date    2022/2/22
     */
    public function getSign($param){
        $app_secret = env('KS.AppSecret');
        $sign_data = [];
        foreach ($param as $k=>$v){
            if(!in_array($k,array('access_token','sign')) && !empty($v)){
                $sign_data[$k] = $v;
            }
        }
        ksort($sign_data);
        $sign_str = '';
        $i = 1;
        foreach ($sign_data as $k=>$v){
            if($i == 1){
                $sign_str .= $k.'='.$v;
            }else{
                $sign_str .= '&'.$k.'='.$v;
            }
            $i++;
        }
        $sign_str .= $app_secret;
        $sign = MD5($sign_str);
        return $sign;
    }

}

env配置文件代码
[KS]
AppID = you AppID 
AppSecret = you AppSecret