PHP实现微信小程序在线支付功能(代码实例)
发布:smiling 来源: PHP粉丝网 添加日期:2022-02-19 09:21:50 浏览: 评论:0
这篇文章主要介绍了PHP微信小程序在线支付功能(代码实例),本文通过实例代码给大家介绍的非常详细,对大家的工作或学习具有一定的参考借鉴价值,需要的朋友可以参考下。
小程序访问地址:payfee.php 如果使用TP框架处理后台的话,写成方法即可
- include 'WeixinPay.php';
- $appid=''; //小程序appid
- $openid= $_POST['id'];
- $mch_id=''; //微信支付商户支付号
- $key=''; //Api密钥
- $out_trade_no = $mch_id. time();
- $total_fee = $_POST['fee'];
- if (emptyempty($total_fee)) { //押金
- $body = "充值押金";
- $total_fee = floatval(99*100);
- } else {
- $body = "充值余额";
- $total_fee = floatval($total_fee*100);
- }
- $weixinpay = new WeixinPay($appid,$openid,$mch_id,$key,$out_trade_no,$body,$total_fee);
- $return=$weixinpay->pay();
- echo json_encode($return);
WeixinPay.php微信小程序支付类 所有微信小程序需要的参数都已经写入
- /*
- * 小程序微信支付
- */
- class WeixinPay {
- protected $appid;
- protected $mch_id;
- protected $key;
- protected $openid;
- protected $out_trade_no;
- protected $body;
- protected $total_fee;
- function __construct($appid, $openid, $mch_id, $key,$out_trade_no,$body,$total_fee) {
- $this->appid = $appid;
- $this->openid = $openid;
- $this->mch_id = $mch_id;
- $this->key = $key;
- $this->out_trade_no = $out_trade_no;
- $this->body = $body;
- $this->total_fee = $total_fee;
- }
- public function pay() {
- //统一下单接口
- $return = $this->weixinapp();
- return $return;
- }
- //统一下单接口
- private function unifiedorder() {
- $url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
- $parameters = array(
- 'appid' => $this->appid, //小程序ID
- 'mch_id' => $this->mch_id, //商户号
- 'nonce_str' => $this->createNoncestr(), //随机字符串
- // 'body' => 'test', //商品描述
- 'body' => $this->body,
- // 'out_trade_no' => '2018013106125348', //商户订单号
- 'out_trade_no'=> $this->out_trade_no,
- // 'total_fee' => floatval(0.01 * 100), //总金额 单位 分
- 'total_fee' => $this->total_fee,
- 'spbill_create_ip' => $_SERVER['REMOTE_ADDR'], //终端IP
- // 'spbill_create_ip' => '192.168.0.161', //终端IP
- 'notify_url' => 'https://www.weixin.qq.com/wxpay/notify.php', //通知地址 确保外网能正常访问
- 'openid' => $this->openid, //用户id
- 'trade_type' => 'JSAPI'//交易类型
- );
- //统一下单签名
- $parameters['sign'] = $this->getSign($parameters);
- $xmlData = $this->arrayToXml($parameters);
- $return = $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60));
- return $return;
- }
- private static function postXmlCurl($xml, $url, $second = 30)
- {
- $ch = curl_init();
- //设置超时
- curl_setopt($ch, CURLOPT_TIMEOUT, $second);
- curl_setopt($ch, CURLOPT_URL, $url);
- curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
- curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //严格校验
- //设置header
- curl_setopt($ch, CURLOPT_HEADER, FALSE);
- //要求结果为字符串且输出到屏幕上
- curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
- //post提交方式
- curl_setopt($ch, CURLOPT_POST, TRUE);
- curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
- curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
- curl_setopt($ch, CURLOPT_TIMEOUT, 40);
- set_time_limit(0);
- //运行curl
- $data = curl_exec($ch);
- //返回结果
- if ($data) {
- curl_close($ch);
- return $data;
- } else {
- $error = curl_errno($ch);
- curl_close($ch);
- throw new WxPayException("curl出错,错误码:$error");
- }
- }
- //数组转换成xml
- private function arrayToXml($arr) {
- $xml = "<xml>";
- foreach ($arr as $key => $val) {
- if (is_array($val)) {
- $xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">";
- } else {
- $xml .= "<" . $key . ">" . $val . "</" . $key . ">";
- }
- }
- $xml .= "</xml>";
- return $xml;
- }
- //xml转换成数组
- private function xmlToArray($xml) {
- //禁止引用外部xml实体
- libxml_disable_entity_loader(true);
- $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
- $val = json_decode(json_encode($xmlstring), true);
- return $val;
- }
- //微信小程序接口
- private function weixinapp() {
- //统一下单接口
- $unifiedorder = $this->unifiedorder();
- // print_r($unifiedorder);
- $parameters = array(
- 'appId' => $this->appid, //小程序ID
- 'timeStamp' => '' . time() . '', //时间戳
- 'nonceStr' => $this->createNoncestr(), //随机串
- 'package' => 'prepay_id=' . $unifiedorder['prepay_id'], //数据包
- 'signType' => 'MD5'//签名方式
- );
- //签名
- $parameters['paySign'] = $this->getSign($parameters);
- return $parameters;
- }
- //作用:产生随机字符串,不长于32位
- private function createNoncestr($length = 32) {
- $chars = "abcdefghijklmnopqrstuvwxyz0123456789";
- $str = "";
- for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } //作用:生成签名 private function getSign($Obj) { foreach ($Obj as $k => $v) {
- $Parameters[$k] = $v;
- }
- //签名步骤一:按字典序排序参数
- ksort($Parameters);
- $String = $this->formatBizQueryParaMap($Parameters, false);
- //签名步骤二:在string后加入KEY
- $String = $String . "&key=" . $this->key;
- //签名步骤三:MD5加密
- $String = md5($String);
- //签名步骤四:所有字符转为大写
- $result_ = strtoupper($String);
- return $result_;
- }
- ///作用:格式化参数,签名过程需要使用
- private function formatBizQueryParaMap($paraMap, $urlencode) {
- $buff = "";
- ksort($paraMap);
- foreach ($paraMap as $k => $v) {
- if ($urlencode) {
- $v = urlencode($v);
- }
- $buff .= $k . "=" . $v . "&";
- }
- $reqPar = '';
- if (strlen($buff) > 0) {
- $reqPar = substr($buff, 0, strlen($buff) - 1);
- }
- return $reqPar;
- }
- }
小程序页面请求处理:
- wx.request({
- url: 'https://yourhost.com/wxpay/payfee.php',//改成你自己的链接
- data:{
- id: app.globalData.openid,//获取用户openid
- fee:100 //商品价格
- },
- header: {
- 'Content-Type': 'application/x-www-form-urlencoded'
- },
- method: 'POST',
- success: function (res) {
- console.log(res.data);
- console.log('调起支付');
- wx.requestPayment({
- 'timeStamp': res.data.timeStamp,
- 'nonceStr': res.data.nonceStr,
- 'package': res.data.package,
- 'signType': 'MD5',
- 'paySign': res.data.paySign,
- 'success': function (res) {
- console.log('success');
- wx.showToast({
- title: '支付成功',
- icon: 'success',
- duration: 3000
- });
- },
- 'fail': function (res) {
- console.log(res);
- },
- 'complete': function (res) {
- console.log('complete');
- }
- });
- },
- fail: function (res) {
- console.log(res.data)
- }
- });
回调URL:notify.php
- $postXml = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信参数
- // 接受不到参数可以使用file_get_contents("php://input"); PHP高版本中$GLOBALS好像已经被废弃了
- if (emptyempty($postXml)) {
- return false;
- }
- //将xml格式转换成数组
- function xmlToArray($xml) {
- //禁止引用外部xml实体
- libxml_disable_entity_loader(true);
- $xmlstring = simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA);
- $val = json_decode(json_encode($xmlstring), true);
- return $val;
- }
- $attr = xmlToArray($postXml);
- $total_fee = $attr['total_fee'];
- $open_id = $attr['openid'];
- $out_trade_no = $attr['out_trade_no'];
- $time = $attr['time_end'];
So:在微信的异步通知后,也需要给微信服务器,返回一个信息,只不过微信的所有数据格式都是xml的,所以我们在返回一个数据给微信即可。
echo exit('<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>');
Tags: PHP微信小程序在线支付
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