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微信小程序支付(服务端)

南鸢离梦的博客
南鸢离梦的博客原创
2019年11月12日 15:56:21999浏览

下单示例
<?php
namespace app\miniapp\controller;

class Api extends Controller {
public function pay()
{

  1.         // 直接下单
  2.         $g[0]['id'] = $gid;
  3.         $g[0]['num'] = $num;
  4.         $data['qid'] = $qid;
  5.         $data['goods'] = json_encode($g);
  6.         $data['money'] = $money;
  7.         $address = MarketAddress::where('openid',$this->userinfo['openid'])->find();
  8.         unset($address['id']); unset($address['qid']); unset($address['uid']);
  9.         unset($address['openid']); unset($address['lat']); unset($address['lng']);
  10.         $data['ag'] = $address['ag'];
  11.         $data['address'] = json_encode($address);
  12.         $data['order_number'] = date('YmdHis',time());
  13.         $data['openid'] = $this->userinfo['openid'];
  14.         $data['uid'] = $this->userId;
  15.         $data['time'] = date('Y-m-d H:i:s',time());
  16.         $res = Db::name('miniapp_order')->insert($data);
  17.         if (!$res){
  18.             return json(['code'=>0,'网络不佳,下单失败']);
  19.         }
  20.         $pay = new WxPay(); // 实例化并调用
  21.         $result = $pay->wechatPay($this->userinfo['openid'],$data['money'],'乐尚客生活',$data['order_number']);
  22.         return $result;
  25. }

}

封装好的微信支付类
<?php
namespace app\miniapp\controller;

class wxPay
{
//微信支付 微信用户的openid 要***的金额 支付的类型名称 商品名 下单订单号
public function wechatPay($user_openid = ‘’, $ro_pay_price = ‘’, $body_name = ‘’, $order_number = ‘’){

  1.     $fee = $ro_pay_price; //举例充值0.01
  2.     $appid = 'wxec5fff46b3259747';//如果是公众号 就是公众号的appid
  3.     $body = $body_name;  // 举例: 服务预约
  4.     $mch_id = '123456789';   // 您的商户账号
  5.     $nonce_str = $this->nonce_str(); //随机字符串
  6.     $notify_url = 'http://xxx.com';  // 回调的url【自己填写,如若回调不成功请注意查看服务器是否开启防盗链,回调地址用http】
  7.     $openid = $user_openid;  // 用户openid  传参
  8.     $out_trade_no = $order_number;//商户订单号
  9.     $spbill_create_ip = '122.114.99.99';   // IP白名单
  10.     $total_fee = $fee * 100; //因为充值金额最小是1 而且单位为分 如果是充值1元所以这里需要*100
  11.     $trade_type = 'JSAPI'; //交易类型 默认
  13.     //这里是按照顺序的 因为下面的签名是按照顺序 排序错误 肯定出错
  15.     $post['appid'] = $appid;
  16.     $post['body'] = $body;
  17.     $post['mch_id'] = $mch_id;
  18.     $post['nonce_str'] = $nonce_str;//随机字符串
  19.     $post['notify_url'] = $notify_url;
  20.     $post['openid'] = $openid;
  21.     $post['out_trade_no'] = $out_trade_no;
  22.     $post['spbill_create_ip'] = $spbill_create_ip;//终端的ip
  23.     $post['total_fee'] = $total_fee;//总金额 最低为一块钱 必须是整数
  24.     $post['trade_type'] = $trade_type;
  25.     $sign = $this->sign($post);//签名
  27.     $post_xml = '<xml>
  28.        <appid>'.$appid.'</appid>
  29.        <body>'.$body.'</body>
  30.        <mch_id>'.$mch_id.'</mch_id>
  31.        <nonce_str>'.$nonce_str.'</nonce_str>
  32.        <notify_url>'.$notify_url.'</notify_url>
  33.        <openid>'.$openid.'</openid>
  34.        <out_trade_no>'.$out_trade_no.'</out_trade_no>
  35.        <spbill_create_ip>'.$spbill_create_ip.'</spbill_create_ip>
  36.        <total_fee>'.$total_fee.'</total_fee>
  37.        <trade_type>'.$trade_type.'</trade_type>
  38.        <sign>'.$sign.'</sign>
  39.     </xml> ';
  41.     //统一接口prepay_id
  43.     $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
  44.     $xml = $this->http_request($url, $post_xml);
  46.     $array = $this->xml($xml); //全要大写
  47.     if($array['RETURN_CODE'] == 'SUCCESS' && $array['RESULT_CODE'] == 'SUCCESS'){
  48.         $time = time();
  49.         $tmp='';//临时数组用于签名
  50.         $tmp['appId'] = $appid;
  51.         $tmp['nonceStr'] = $nonce_str;
  52.         $tmp['package'] = 'prepay_id='.$array['PREPAY_ID'];
  53.         $tmp['signType'] = 'MD5';
  54.         $tmp['timeStamp'] = "$time";
  56.         $data['statu'] = 1;
  57.         $data['timeStamp'] = "$time";//时间戳
  58.         $data['nonceStr'] = $nonce_str;//随机字符串
  59.         $data['signType'] = 'MD5';//签名算法，暂支持 MD5
  60.         $data['package'] = 'prepay_id='.$array['PREPAY_ID'];//统一下单接口返回的 prepay_id 参数值，提交格式如：prepay_id=*
  61.         $data['paySign'] = $this->sign($tmp);//签名,具体签名方案参见微信公众号支付帮助文档;
  62.         $data['out_trade_no'] = $out_trade_no;
  64.     }else{
  65.         $data['statu'] = 0;
  66.         $data['text'] = "错误";
  67.         $data['RETURN_CODE'] = $array['RETURN_CODE'];
  68.         $data['RETURN_MSG'] = $array['RETURN_MSG'];
  69.     }
  71.     return json_encode($data);
  73. }
  75. //签名 $data要先排好顺序
  76. private function sign($data)
  77. {
  78.     $stringA = '';
  79.     foreach ($data as $key => $value) {
  80.         if (!$value) continue;
  81.         if ($stringA) $stringA .= '&' . $key . "=" . $value;
  82.         else $stringA = $key . "=" . $value;
  83.     }
  84.     $wx_key = 'abcdefghijklmnopqrstuvwxyz123456789';//申请支付后有给予一个商户账号和密码，登陆后自己设置key
  85.     $stringSignTemp = $stringA . '&key=' . $wx_key;//申请支付后有给予一个商户账号和密码，登陆后自己设置key
  86.     return strtoupper(md5($stringSignTemp));
  87. }
  90. //随机32位字符串
  91. private function nonce_str(){
  92.     $result = '';
  93.     $str = 'QWERTYUIOPASDFGHJKLZXVBNMqwertyuioplkjhgfdsamnbvcxz';
  94.     for ($i=0;$i<32;$i++){
  95.         $result .= $str[rand(0,48)];
  96.     }
  97.     return $result;
  98. }
  100. //curl请求啊
  101. function http_request($url,$data = null,$headers=array())
  102. {
  103.     $curl = curl_init();
  104.     if( count($headers) >= 1 ){
  105.         curl_setopt($curl, CURLOPT_HTTPHEADER, $headers);
  106.     }
  107.     curl_setopt($curl, CURLOPT_URL, $url);
  109.     curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
  110.     curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
  112.     if (!empty($data)){
  113.         curl_setopt($curl, CURLOPT_POST, 1);
  114.         curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
  115.     }
  116.     curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
  117.     $output = curl_exec($curl);
  118.     curl_close($curl);
  119.     return $output;
  120. }
  122. //获取xml
  123. private function xml($xml){
  124.     $p = xml_parser_create();
  125.     xml_parse_into_struct($p, $xml, $vals, $index);
  126.     xml_parser_free($p);
  127.     $data = "";
  128.     foreach ($index as $key=>$value) {
  129.         if($key == 'xml' || $key == 'XML') continue;
  130.         $tag = $vals[$value[0]]['tag'];
  131.         $value = $vals[$value[0]]['value'];
  132.         $data[$tag] = $value;
  133.     }
  134.     return $data;
  135. }

}

支付完回调

  1. <?php

namespace app\miniapp\controller;

class Notify extends Controller {
// 支付回调
public function notify(){
$testxml = file_get_contents(“php://input”);
$jsonxml = json_encode(simplexml_load_string($testxml, ‘SimpleXMLElement’, LIBXML_NOCDATA));

  1.     $result = json_decode($jsonxml, true);//转成数组，
  2.     if($result){
  3.         //如果成功返回了
  4.         if($result['return_code'] == 'SUCCESS' && $result['result_code'] == 'SUCCESS'){
  5.             // 这里写回调更新支付状态以及你的业务逻辑
  9.             // 告知微信回调成功
  10.             echo 'SUCCESS';
  12.         }
  13.     }
  14. }

}

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