Payment.php
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<?php
class Payment {
protected $attach;
protected $openid;
protected $body;
protected $total_fee;
function __construct($attach=null, $openid=null, $body=null, $total_fee=null) {
$this->attach = $attach;
$this->openid = $openid;
$this->body = $body;
$this->total_fee = $total_fee;
}
/**
* 对外暴露的支付接口
* @return array
*/
public function pay() {
return $this->weixinPay();
}
private function weixinPay() {
//统一下单接口
$unifiedorder = $this->unifiedorder();
$parameters = array(
'appId' => config('AppID'),
'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;
}
//统一下单接口
private function unifiedorder() {
$url = 'https://api.mch.weixin.qq.com/pay/unifiedorder';
$parameters = array(
'appid' => config('AppID'),
'mch_id' => config('MchId'),
'nonce_str' => $this->createNoncestr(),
'body' => $this->body,
'out_trade_no' => config('MchId').time(),
'total_fee' => $this->total_fee,
'spbill_create_ip' => '114.215.223.17', //终端IP
'notify_url' => 'http://sami.w.bronet.cn/order/Order/notify',
'openid' => $this->openid,
'trade_type' => 'JSAPI',//交易类型
'attach' => $this->attach
);
//统一下单签名
$parameters['sign'] = $this->getSign($parameters);
$xmlData = $this->arrayToXml($parameters);
$return = $this->xmlToArray($this->postXmlCurl($xmlData, $url, 60));
return $return;
}
//作用：生成签名
private function getSign($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=" . config('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 $result_;
}
private static function postXmlCurl($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 $val;
}
//作用：产生随机字符串，不长于32位
private function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
}
return $str;
}
///作用：格式化参数，签名过程需要使用
private function formatBizQueryParaMap($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 $reqPar;
}
public function handleNotify() {
//$postXml = $GLOBALS["HTTP_RAW_POST_DATA"]; //接收微信参数
$postXml=file_get_contents("php://input");
cache('xml', $postXml);
if (empty($postXml)) {
return false;
}else {
$data = $this->xmlToArray($postXml);
if($data['return_code'] == 'SUCCESS' && $data['result_code'] == 'SUCCESS') {
$data = (array)simplexml_load_string($postXml, 'SimpleXMLElement', LIBXML_NOCDATA);
$signA = "appid=".$data['appid']."&attach=".$data['attach']."&bank_type=".$data['bank_type']."&cash_fee=".$data['cash_fee']."&fee_type=".$data['fee_type']."&is_subscribe=".$data['is_subscribe']."&mch_id=".$data['mch_id']."&nonce_str=".$data['nonce_str']."&openid=". $data['openid']."&out_trade_no=".$data['out_trade_no']."&result_code=".$data['result_code']."&return_code=".$data['return_code']."&time_end=".$data['time_end']."&total_fee=".$data['total_fee']."&trade_type=".$data['trade_type']."&transaction_id=".$data['transaction_id']."&key=".config('Key');
$sign = strtoupper(MD5($signA));
if($sign == $data['sign']) {
return $data;
}else {
return false;
}
}else {
return false;
}
}
}
}