php--tp5小程序支付

浅浅的花香味﹌ 2023-07-09 05:28 1阅读 0赞

class Payment extends Apiclass
    { 
        public $config;
    	
        function __construct()
        { 
            //查询小程序配置信息
            $this->config=Db::name('payinfo')->where('type',1)->find();
        }
    
        //支付
        public function pay()
        { 
        	//接收小程序端传的参数
            $id = input('id');
            $user_id = input('user_id');
            $goods_name = input('goods_name');
            //查询订单信息
            $order=Db::name('order')->where(['id'=>$id,'user_id'=>$user_id])->find();
            //获取openid
            $user=Db::name('users')->where('id',$user_id)->find();
            if (empty($user['open_id'])) { 
                return $this->msg(false,'openid不存在');
            }
            $openid=$user['open_id'];
            $param=[
                'appid'=>$this->config['appid'], //小程序appid
                'mch_id'=>$this->config['mch_id'], //商户id
                'nonce_str'=>$this->getRand(20,true), //随机字符串
                'body'=>$goods_name, //商品名称
                'out_trade_no'=>$order['order_no'], //订单号
                'total_fee'=> 100, //支付金额（分）
                'spbill_create_ip'=>$this->get_client_ip(), //用户ip
                'notify_url'=>$this->config['notify_url'], //支付回调地址
                'trade_type'=>'JSAPI', //
                'openid'=>$openid //用户的openid
            ];
            //生成签名
            $sign=$this->makeSign($param,$this->config['mchkey']);
            $param['sign']=$sign;
            try{ 
            	//将数组转换成xml数据
                $xml=$this->ToXml($param);
            }catch (\Exception $e){ 
                return $this->msg('false',$e->getMessage());
            }
            //微信小程序支付接口地址
            $url="https://api.mch.weixin.qq.com/pay/unifiedorder";
            //请求微信支付接口
            $getXml=$this->curl_post($url,$xml,false);
            //将微信返回值转换成数组
            $getArr=$this->FromXml($getXml);
            if ($getArr['return_code']=='SUCCESS'&&$getArr['result_code']=='SUCCESS') { 
            	//请求成功
                $prepay_id=$getArr['prepay_id'];
                $data['appId']=$this->config['appid'];
                $time = time();
                $data['timeStamp']="{ $time}";
                $data['nonceStr']=$this->getRand(20,true);
                $data['package']="prepay_id=".$prepay_id;
                $data['signType']='MD5';
                $data['paySign']=$this->makeSign($data,$this->config['mchkey']);
            } else if($getArr['return_code']=='SUCCESS'&&$getArr['result_code']=='FAIL') { 
                $data['code']=$getArr['err_code'];
                $data['msg']=$getArr['err_code_des'];
            } else { 
                $data['code']=$getArr['return_code'];
                $data['msg']=$getArr['return_msg'];
            }
            return $this->msg('true','请求结果',$data);
        }
    
        //支付成功回调
        public function paysuccess()
        { 
            //接收微信返回的数据数据,返回的xml格式
            $xmlData = file_get_contents('php://input');
    		//下面四行代码可以将支付返回的xml数据写入一个文件，从文件中复制xml代码，赋值给 $xmlData 变量，就可以重复测试此接口，不用每次测试都执行支付接口
    		// $myfile = fopen(__DIR__."newfile.txt", "w") or die("Unable to open file!");
    		// $txt = $xmlData;
    		// fwrite($myfile, $txt);
    		// fclose($myfile);
    
            //将xml格式转换为数组
            $data = $this->FromXmls($xmlData);
            if ($data[0] == 'false') { 
                return;
            }
            //记录一下，返回回来的签名，生成签名的时候，必须剔除sign字段。
            $data = $data[1];
            if (!isset($data['sign'])) { 
                return;
            }
            $sign = $data['sign'];
            unset($data['sign']);
    
            if($sign == $this->makeSign($data,$this->config['mchkey'])){ 
                //签名验证成功后
                if ($data['result_code'] == 'SUCCESS') { 
                	//支付成功
                    $orderId = $data['out_trade_no'];
                    Db::startTrans();
                    try { 
                       //在这里执行支付成功后的逻辑
                       Db::commit();
                    } catch (\Exception $e) { 
                        Db::rollback();
                    }
                }else { 
                	//支付失败，输出错误信息
                    return json_encode(['false',$data['return_msg']]);
                }
            } else { 
                return json_encode(['true','签名失败！']);
            }
        }
    	//将xml转换成数组
        private function FromXmls($xml)
        { 
            if(!$xml){ 
                return ['false','xml数据异常！'];
            }
            //将XML转为array
            //禁止引用外部xml实体
            libxml_disable_entity_loader(true);
            $data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
            return ['true',$data];
        }
    
        //将数组转换成xml数据
        public function ToXml($data)
        { 
            if(!is_array($data)
                || count($data) <= 0)
            { 
                throw new Exception("数组数据异常！");
            }
    
            $xml = "<xml>";
            foreach ($data as $key=>$val)
            { 
                if (is_numeric($val)){ 
                    $xml.="<".$key.">".$val."</".$key.">";
                }else{ 
                    $xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
                }
            }
            $xml.="</xml>";
            return $xml;
        }
        
        //获取随机字符串
        protected function getRand( $length = 6,$isAll = false) 
        { 
    		
            if ($isAll) { 
                $chars = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
            } else { 
                $chars = '0123456789';
            }
            $randStr = '';
            for ( $i = 0; $i < $length; $i++ ) 
            { 
                $randStr .= $chars[ mt_rand(0, strlen($chars) - 1) ];
            }
            return $randStr;
        }
        //生成签名
        protected function makeSign($param,$key)
        { 
            ksort($param);
            $string=$this->toUrlParams($param);
            $string=$string.'&key='.$key;
            $string=md5($string);
            $result=strtoupper($string);
            return $result;
        }
    
        //拼接字符串
        protected function toUrlParams($param)
        { 
            $string='';
            if (!empty($param)) { 
                $array=array();
                foreach ($param as $key=>$v) { 
                    $array[]=$key.'='.$v;
                }
                $string=implode('&',$array);
            }
            return $string;
        }
        //获取哦用户的ip地址
        protected function get_client_ip(){ 
            if(!empty($_SERVER["HTTP_CLIENT_IP"]))
            { 
                $cip = $_SERVER["HTTP_CLIENT_IP"];
            }
            else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))
            { 
                $cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
            }
            else if(!empty($_SERVER["REMOTE_ADDR"]))
            { 
                $cip = $_SERVER["REMOTE_ADDR"];
            }
            else
            { 
                $cip = '';
            }
            preg_match("/[\d\.]{7,15}/", $cip, $cips);
            $cip = isset($cips[0]) ? $cips[0] : '127.0.0.1';
            unset($cips);
            return $cip;
        }
        //curl请求模块
    	protected function curl_post($url,$post_data,$isTrue = true)
        { 
            if (is_array($post_data)) { 
                $postData = http_build_query($post_data);
            }
            $ch = curl_init();
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
            curl_setopt($ch, CURLOPT_TIMEOUT, 30);
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            $data = curl_exec($ch);
            curl_close($ch);
            return $data;
        }
        //统一返回
    	public function msg($code,$msg,$data = [])
        { 
            return ['code'=>$code,'msg'=>$msg,'data'=>$data];
        }

小程序端

wx.requestPayment(
    { 
      "timeStamp":res.data.data.timeStamp,
      "nonceStr": res.data.data.nonceStr,
      "package": res.data.data.package,
      "signType": res.data.data.signType,
      "paySign": res.data.data.paySign,
      "success":function(res){ 
        wx.showModal({ 
          title: '提示',
          content: '支付成功',
          confirmText:'立即查看',
          success: function (res) { 
            if (res.confirm) {   
              wx.navigateTo({ 
                url: '/pages/wode/quan'
              })
            }
          }
        })
      },
      "fail":function(res){ },
      "complete":function(res){ }
    })