微信小程序支付 后台处理逻辑 （转）
<?php
namespace app\parent\controller;
use think\Request;
class Wxpay
{
function wechat(){ //微信配置信息和初始逻辑
$openid =Request::instance()->param('openid');
$out_trade_no =Request::instance()->param('out_trade_no');
$total_fee =Request::instance()->param('total_fee');
$appid = "*******";
$body = mb_convert_encoding("订单详情","utf-8","gbk"); //商品描述
$mch_id = "*******"; //商户号
$nonce_str = $this->getNonceStr(); //随机字符
$notify_url = *******'; //回调地址
$openid = $openid;/*"o-E0L0X-hr-kXdHVrLwjzxF--sE4";*/ //openid
$out_trade_no = $out_trade_no; //商户订单编号
$ip = request()->ip(); //ip
$total_fee = $total_fee; //支付金额 分
$key = "*******";
$param = $this->signature($appid,$body,$mch_id,$nonce_str,$notify_url,$openid,$out_trade_no,$ip,$total_fee,$key);
//发起请求
$xml = $this->post_curl("https://api.mch.weixin.qq.com/pay/unifiedorder",$param); //发起请求
//数据结果解析
$info = json_decode(json_encode(simplexml_load_string($xml,'SimpleXMLElement',LIBXML_NOCDATA)),true);
$prepay_id = $info['prepay_id'];
$noncestr = $info['nonce_str'];
$timestamp = time();
$SignA = strtoupper(md5("appid=$appid&noncestr=$noncestr&package=Sign=WXPay&partnerid=$mch_id&prepayid=$prepay_id×tamp=$timestamp&key=$key"));
$info['sign'] = $SignA;
$info['timestamp'] = $timestamp;
return json_decode($info);
}
private function signature($appid,$body,$mch_id,$nonce_str,$notify_url,$openid,$out_trade_no,$ip,$total_fee,$key){ //清新支付请求数据组装
$stringA = "appid=$appid&body=$body&mch_id=$mch_id&nonce_str=$nonce_str¬ify_url=$notify_url&openid=$openid&out_trade_no=$out_trade_no&spbill_create_ip=$ip&total_fee=$total_fee&trade_type=JSAPI";
$stringSignTemp = $stringA."&key=$key";
$sign = strtoupper(md5($stringSignTemp));
$param = "<xml>\n";
$param .= "<appid>{$appid}</appid>\n";
$param .= "<body>{$body}</body>\n";
$param .= "<mch_id>{$mch_id}</mch_id>\n";
$param .= "<nonce_str>{$nonce_str}</nonce_str>\n";
$param .= "<notify_url>{$notify_url}</notify_url>\n";
$param .= "<openid>{$openid}</openid>\n";
$param .= "<out_trade_no>{$out_trade_no}</out_trade_no>\n";
$param .= "<spbill_create_ip>{$ip}</spbill_create_ip>\n";
$param .= "<total_fee>{$total_fee}</total_fee>\n";
$param .= "<trade_type>JSAPI</trade_type>\n";
$param .= "<sign>{$sign}</sign>\n";
$param .= "</xml>";
return $param;
}
/**
* 产生随机字符串，不长于32位
* @param int $length
* @return 产生的随机字符串
*/
private function getNonceStr($length = 32)
{
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str ="";
for ( $i = 0; $i < $length; $i++ ) {
$str .= substr($chars, mt_rand(0, strlen($chars)-1), 1);
}
return $str;
}
private function post_curl($url,$data,$agreement = 0){
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HEADER, 0);
if($agreement == 0){//0 https 1 http
unset($_REQUEST['agreement']);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
}
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,$data);
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (compatible; MSIE 5.01; Windows NT 5.0)');
curl_setopt($ch, CURLOPT_TIMEOUT, 15);
$result = curl_exec($ch);
curl_close($ch);
return $result;
}
}
转载自：https://blog.csdn.net/qq_34629975/article/details/72420411
