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://plete'); } }); }, 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

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