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131 lines
3.4 KiB
131 lines
3.4 KiB
3 years ago
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<?php
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/**
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* Date: 2020/8/5 16:58
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* User: chenlong <vip_chenlong@163.com>
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*/
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namespace weChat\pay;
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use app\common\SdException;
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use weChat\common\Helper;
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/**
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* 微信支付
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* Class WeChatPay
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* @package weChat\pay
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*/
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class WeChatPay
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{
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use BasicsAction,BasicsProperty;
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// 请求地址
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const REQUEST_URL = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
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// 支付类型
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const APP = 'APP';
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const H5 = 'MWEB';
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const JS_API = 'JSAPI';
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const NATIVE = 'NATIVE';
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/**
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* 初始化
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* WeChatPay constructor.
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* @param string $trade_type 支付类型
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*/
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public function __construct($trade_type = self::JS_API)
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{
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$this->trade_type = $trade_type; // 支付方式
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$this->appid = $this->getParam('appid'); // 小程序或公众号 appid
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$this->mch_id = $this->getParam('mch_id'); // 商户号
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$this->key = $this->getParam('key'); // 商秘钥
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$this->init();
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}
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/**
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* 发起下单请求，返回微信统一下单返回的数据
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* @return mixed
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* @throws \think\Exception
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*/
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public function request()
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{
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$unifiedOrder = self::postRequest(self::REQUEST_URL, $this->xml()); // CURL 的 post请求
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return Helper::xmlToArray($unifiedOrder);
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}
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/**
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* 生成调起支付接口的提交数据
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* @param string|bool $prepayId 微信返回的 prepay_id(request方法), 为true 的时候可直接调用返回微信支付所需数据
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* @return array
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* @throws SdException|\think\Exception
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*/
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public function requestPayData($prepayId)
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{
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if ($prepayId === true) {
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$prepayId = $this->request();
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$prepayId = $prepayId['prepay_id'] ?? 0;
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}
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if (empty($prepayId)) throw new SdException('下单失败！');
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// 组织再次签名所需的数据
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$SignField = [
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'appId' => $this->appid,
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'timeStamp' => (string)time(),
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'nonceStr' => $this->random(),
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'package' => 'prepay_id=' . $prepayId,
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'signType' => $this->sign_type
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];
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$wxPayData = array_merge($SignField, ['paySign' => $this->sign($SignField)]);
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unset($wxPayData['appId']);
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return $wxPayData;
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}
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/**
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* 微信支付结果通知方法调用，返回数据；
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* @param callable|null $errHandle 处理错误的函数
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* @return bool|mixed
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*/
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public static function wxNotice(callable $errHandle = null)
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{
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// 获取微信返回的xml数据
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$xmlData = file_get_contents('php://input');
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libxml_disable_entity_loader(true);
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$data = Helper::xmlToArray($xmlData);
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if ($data['return_code'] == 'SUCCESS') {
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$sign = $data['sign'];
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unset($data['sign']);
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if ($sign == (new self())->sign($data)) return $data;
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if ($errHandle !== null) call_user_func($errHandle, '签名错误！');
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}else{
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if ($errHandle !== null) call_user_func($errHandle, $data);
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}
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return false;
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}
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/**
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* 异步成功通知
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* @return \think\response\Xml
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*/
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public static function AsyncReturnSuccess()
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{
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return xml(['return_code' => 'SUCCESS']);
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}
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/**
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* 异步失败通知
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* @return \think\response\Xml
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*/
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public static function AsyncReturnFail()
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{
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return xml(['return_code' => 'FAIL']);
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}
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}
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