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微信小程序与php 实现微信支付的简单实例

更新时间:2020-05-19 23:30:01 作者:startmvc
微信小程序与php实现微信支付的简单实例小程序访问地址:payfee.PHP:include'WeixinPay.php';$appid='

微信小程序与php 实现微信支付的简单实例

小程序访问地址:

payfee.PHP:


include 'WeixinPay.php'; 
$appid=''; 
$openid= $_GET['id']; 
$mch_id=''; 
$key=''; 
$out_trade_no = $mch_id. time(); 
$total_fee = $_GET['fee']; 
if(empty($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); 

WeixinPay.php:


<?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' => '2015450806125348', //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' => 'http://www.weixin.qq.com/wxpay/pay.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) { 
 $xml = "<root>"; 
 foreach ($arr as $key => $val) { 
 if (is_array($val)) { 
 $xml .= "<" . $key . ">" . arrayToXml($val) . "</" . $key . ">"; 
 } else { 
 $xml .= "<" . $key . ">" . $val . "</" . $key . ">"; 
 } 
 } 
 $xml .= "</root>"; 
 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; 
 } 
 
 
} 

小程序页面处理:


wx.request({ 
url:'https://www.yourhost.com/weixin/WeiActivity/payfee.php',//改成你自己的链接 
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('fail'); 
}, 
'complete':function(res){ 
console.log('complete'); 
} 
}); 
}, 
fail:function(res){ 
console.log(res.data) 
} 
}); 

回调url:notify.php


$postXml = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信参数 
if (empty($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]; 

以上几步你就可以完成小程序的微信支付与php完美的结合起来

感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

微信小程序与php 实现微信支付 小程序 微信支付开发