class Pay extends Controller
{
const WX_PAY_URL = "https://api.mch.weixin.qq.com/pay/unifiedorder";
const NOTIFY_URL = "http://xxx.xxx.com/wx_notify";
const WX_APPID = "wx***********";
const WX_MCHID = "1********";
const WX_MCHKEY = "*********"; //key是在商户平台API安全里自己设置的
public function wxPay()
{
$money = input('post.money/s','','trim');
$nonce_str = randCode(); //调用随机字符串生成方法获取随机字符串
$data['appid'] = self::WX_APPID; //appid
$data['mch_id'] = self::WX_MCHID; //商户号
$data['body'] = "APP支付测试";
$data['spbill_create_ip'] = getIp(); //ip地址
$data['total_fee'] = $money/100; //金额
$data['out_trade_no'] = time().mt_rand(10000,99999); //商户订单号,不能重复
$data['nonce_str'] = $nonce_str; //随机字符串
$data['notify_url'] = self::NOTIFY_URL; //回调地址,用户接收支付后的通知,必须为能直接访问的网址,不能跟参数
$data['trade_type'] = 'APP'; //支付方式
//将参与签名的数据保存到数组 注意：以上几个参数是追加到$data中的，$data中应该同时包含开发文档中要求必填的剔除sign以外的所有数据
$data['sign'] = getSign($data,self::WX_MCHKEY); //获取签名
$xml = ToXml($data); //数组转xml
//curl 传递给微信方
$url = self::WX_PAY_URL;
//运行curl
$data = curlHttpRequest($url, $xml);
//返回结果
if($data){
//返回成功,将xml数据转换为数组.
$re = FromXml($data);
if($re['return_code'] != 'SUCCESS'){
echo json_encode("code"=>"201","data"=>"","msg"=>'签名失败');
} else {
//接收微信返回的数据,传给APP!
$arr =array(
'prepayid' =>$re['prepay_id'],
'appid' => self::WX_APPID,
'partnerid' => self::WX_MCHID,
'package' => 'Sign=WXPay',
'noncestr' => $nonce_str,
'timestamp' =>time(),
);
//第二次生成签名
$sign = getSign($arr,self::WX_MCHKEY);
$arr['sign'] = $sign;
echo json_encode("code"=>"200","data"=>$arr,"msg"=>'签名成功');
}
} else {
$error = curl_errno($ch);
curl_close($ch);
echo json_encode("code"=>"201","data"=>'"","msg"=>'curl出错，错误码:$error');
}
// 微信支付回调
public function wxNotify(){
//接收微信返回的数据数据,返回的xml格式
$xmlData = file_get_contents('php://input');
//将xml格式转换为数组
$data = FromXml($xmlData);
//用日志记录检查数据是否接受成功，验证成功一次之后，可删除。
$file = fopen('./log.txt', 'a+');
fwrite($file,var_export($data,true));
//为了防止假数据，验证签名是否和返回的一样。
//记录一下，返回回来的签名，生成签名的时候，必须剔除sign字段。
$sign = $data['sign'];
unset($data['sign']);
if($sign == getSign($data)){
//签名验证成功后，判断返回微信返回的
if ($data['result_code'] == 'SUCCESS') {
//根据返回的订单号做业务逻辑
$arr = array(
'pay_status' => 1,
);
$re = M('order')->where(['order_sn'=>$data['out_trade_no']])->save($arr);
//处理完成之后，告诉微信成功结果！
if($re){
echo '<xml><return_code><![CDATA[SUCCESS]]></return_code><return_msg><![CDATA[OK]]></return_msg></xml>';exit();
}
} else {
//支付失败，输出错误信息
$file = fopen('./log.txt', 'a+');
fwrite($file,"错误信息：".$data['return_msg'].date("Y-m-d H:i:s"),time()."\r\n");
}
} else {
$file = fopen('./log.txt', 'a+');
fwrite($file,"错误信息：签名验证失败".date("Y-m-d H:i:s"),time()."\r\n");
}
}
}
?>
<?php
function ToXml($data=array())
{
if(!is_array($data) || count($data) <= 0)
{
return '数组异常';
}
$xml = "<xml>";
foreach ($data as $key=>$val)
{
if (is_numeric($val)){
$xml.="<".$key.">".$val."</".$key.">";
}else{
$xml.="<".$key."><![CDATA[".$val."]]></".$key.">";
}
}
$xml.="</xml>";
return $xml;
}
function randCode()
{
$str = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';//62个字符
$str = str_shuffle($str);
$str = substr($str,0,32);
return $str;
}
function getSign($params,$key)
{
ksort($params); //将参数数组按照参数名ASCII码从小到大排序
foreach ($params as $key => $item) {
if (!empty($item)) { //剔除参数值为空的参数
$newArr[] = $key.'='.$item; // 整合新的参数数组
}
}
$stringA = implode("&", $newArr); //使用 & 符号连接参数
$stringSignTemp = $stringA."&key=".$key; //拼接key
// key是在商户平台API安全里自己设置的
$stringSignTemp = MD5($stringSignTemp); //将字符串进行MD5加密
$sign = strtoupper($stringSignTemp); //将所有字符转换为大写
return $sign;
}
function getIp()
{
if ($_SERVER['REMOTE_ADDR']) {
$ip = $_SERVER['REMOTE_ADDR'];
} elseif (getenv("REMOTE_ADDR")) {
$ip = getenv("REMOTE_ADDR");
} elseif (getenv("HTTP_CLIENT_IP")) {
$ip = getenv("HTTP_CLIENT_IP");
} else {
$ip = "unknown";
}
return $ip;
}
function curlHttpRequest($url,$xml)
{
//header("Content-type:text/xml"););
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL, $url);
if(stripos($url,"https://")!==FALSE){
curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
} else {
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,TRUE);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,2);//严格校验
}
//设置header
curl_setopt($ch, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
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);
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, 30);
curl_setopt($ch, CURLOPT_POST, TRUE);
//传输文件
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
//释放句柄
curl_close($ch);
//运行curl
$data = curl_exec($ch);
//返回结果
return $data;
}
?>
