微信小程序与php 实现微信支付的简单实例
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2022-09-02 12:45:47
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!
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