微信小程序+PHP接口 支付相关代码
签名报错的几种可能性
1.appid和mch_id（微信支付商户支付号）不匹配，appid是小程序id machid进入https://pay.weixin.qq.com/index.php/core/cert/api_cert关联appid获取machid
2.在https://pay.weixin.qq.com/index.php/core/cert/api_cert手动填写32位key值
PHP完成微信小程序在线支付功能
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 = $_POST['fee']; if (empty($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);
<?php /* * 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); // print_r($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); $str = preg_replace('/"(\w+)"(\s*:\s*)/is', '$1$2', $parameters); // print_r($parameters); return $str; } //作用：产生随机字符串，不长于32位 private function createNoncestr($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; } } ?>
<?php include "app_config.php"; date_default_timezone_set('PRC'); $str='<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>'; echo $str; $times = date("Y-m-d H:i:s",time()); //获取接口数据，如果$_REQUEST拿不到数据，则使用file_get_contents函数获取 $post = $_REQUEST; if ($post == null) { $post = file_get_contents("php://input"); } if ($post == null) { $post = isset($GLOBALS['HTTP_RAW_POST_DATA']) ? $GLOBALS['HTTP_RAW_POST_DATA'] : ''; } if (empty($post) || $post == null || $post == '') { //阻止微信接口反复回调接口 $str='<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>'; echo $str; exit('Notify 非法回调'); } libxml_disable_entity_loader(true); //禁止引用外部xml实体 $xml = simplexml_load_string($post, 'SimpleXMLElement', LIBXML_NOCDATA);//XML转数组 $post_data = (array)$xml; /** 解析出来的数组 *Array * ( * [appid] => wx1c870c0145984d30 * [bank_type] => CFT * [cash_fee] => 100 * [fee_type] => CNY * [is_subscribe] => N * [mch_id] => 1297210301 * [nonce_str] => gkq1x5fxejqo5lz5eua50gg4c4la18vy * [openid] => olSGW5BBvfep9UhlU40VFIQlcvZ0 * [out_trade_no] => fangchan_588796 * [result_code] => SUCCESS * [return_code] => SUCCESS * [sign] => F6890323B0A6A3765510D152D9420EAC * [time_end] => 20180626170839 * [total_fee] => 100 * [trade_type] => JSAPI * [transaction_id] => 4200000134201806265483331660 * ) **/ //订单号 $out_trade_no = isset($post_data['out_trade_no']) && !empty($post_data['out_trade_no']) ? $post_data['out_trade_no'] : 0; $myfile = fopen("newfile.txt", "w") or die("Unable to open file!"); $txt = "商户订单号:".$out_trade_no."\n交易时间:".$post_data['time_end'] ."\n微信订单号:".$post_data['transaction_id']."\n订单金额:".($post_data['total_fee']/100). "$\n用户ID:".$post_data['openid']."用户数据:".$post_data['attach']; fwrite($myfile, $txt); fclose($myfile); $dataArray = explode("(LINE)", $post_data['attach']); // 查询商户订单号是否存在，如果存在则进行插入 // 若商户订单号不存在进行插入 $sel_sql = "SELECT * FROM lx_xiasongform WHERE `data_order`='$out_trade_no'"; $sel_res = mysql_query($sel_sql); if($sel_res){ // 执行成功 if(mysql_num_rows($sel_res) > 0){ // 订单号存在，什么都不执行 }else{ $item01 = $dataArray[0]; $item02 = $dataArray[1]; $item03 = $dataArray[2]; $item04 = $dataArray[3]; $item05 = $dataArray[4]; $item06 = $dataArray[5]; $item07 = $dataArray[6]; if(strlen($item01) > 1 && strlen($item02) > 1 && strlen($item03) > 1 && strlen($item04) > 1 && strlen($item05) > 1 && strlen($item06) > 1 && strlen($item07) > 10){ $dingdan = $post_data['out_trade_no']; $insert_sql = "INSERT INTO lx_xiasongform (data_lou,data_lou_num,data_kuaidi_type,data_kuaidi_num,data_name,data_phone,data_order,data_time,data_uid) VALUES ('$item01','$item02','$item03','$item04','$item05','$item06','$dingdan','$times','$item07')"; mysql_query($insert_sql); mysql_close($con); $str='<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>'; echo $str; } } } //阻止微信接口反复回调接口 文档地址 https://pay.weixin.qq.com/wiki/doc/api/H5.php?chapter=9_7&index=7，下面这句非常重要!!! $str='<xml>O<return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[K]]></return_msg></xml>'; echo $str; function MakeSign($params,$key){ //签名步骤一：按字典序排序数组参数 ksort($params); $string = ToUrlParams($params); //参数进行拼接key=value&k=v //签名步骤二：在string后加入KEY $string = $string . "&key=".$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; } function ToUrlParams( $params ){ $string = ''; if( !empty($params) ){ $array = array(); foreach( $params as $key => $value ){ $array[] = $key.'='.$value; } $string = implode("&",$array); } return $string; }
//根据code获取openid等信息 wx.login({ //获取code success: function (res) { var code = res.code; //返回code console.log(code); var appId = 'wxae7ccb47501b13a3'; var secret = '354ea14b843aa16af18cd81c21da34b1'; wx.request({ url: 'https://api.weixin.qq.com/sns/jscode2session?appid=' + appId + '&secret=' + secret + '&js_code=' + code + '&grant_type=authorization_code', data: {}, header: { 'content-type': 'json' }, success: function (res) { console.log(res.data) console.log(res.data.openid) wx.setStorageSync('session', res.data.session_key) wx.setStorageSync('openid', res.data.openid) var openid = res.data.openid //返回openid console.log('openid为' + openid); } }) } });
wx.request({ url: app.globalData.requestur3 +'payfee.php', //换成自己的请求地址 // url: app.globalData.requestur3 + 'wxpay/Pay.php', data: { id: openid,//获取用户 openid fee: money, //价格 openid: openid }, header: { 'Content-Type': 'application/x-www-form-urlencoded' }, method: 'post', success: function (res) { var key = '354ea14b843aa16af18cd81c21da34b1'; 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': res.data.signType, '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) } })
