include 'WeixinPay.php';
$appid=''; //小程序appid
$openid= $_POST['id'];
$mch_id=''; //微信支付商戶支付號(hào)
$key=''; //Api密鑰
$out_trade_no = $mch_id. time();
$total_fee = $_POST['fee'];
if (empty($total_fee)) { //押金
$body = "充值押金";
$total_fee = floatval(99*100);
} else {
$body = "充值余額";
$total_fee = floatval($total_fee*100);
}
$weixinpay = new WeixinPay($appid,$openid,$mch_id,$key,$out_trade_no,$body,$total_fee);
$return=$weixinpay->pay();
echo json_encode($return);
/*
* 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() {
//統(tǒng)一下單接口
$return = $this->weixinapp();
return $return;
}
//統(tǒng)一下單接口
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, //商戶號(hào)
'nonce_str' => $this->createNoncestr(), //隨機(jī)字符串
// 'body' => 'test', //商品描述
'body' => $this->body,
// 'out_trade_no' => '2018013106125348', //商戶訂單號(hào)
'out_trade_no'=> $this->out_trade_no,
// 'total_fee' => floatval(0.01 * 100), //總金額 單位 分
'total_fee' => $this->total_fee,
'spbill_create_ip' => $_SERVER['REMOTE_ADDR'], //終端IP
// 'spbill_create_ip' => '192.168.0.161', //終端IP
'notify_url' => 'https://www.weixin.qq.com/wxpay/notify.php', //通知地址 確保外網(wǎng)能正常訪問
'openid' => $this->openid, //用戶id
'trade_type' => 'JSAPI'//交易類型
);
//統(tǒng)一下單簽名
$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)
{
$ch = curl_init();
//設(shè)置超時(shí)
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); //嚴(yán)格校驗(yàn)
//設(shè)置header
curl_setopt($ch, CURLOPT_HEADER, FALSE);
//要求結(jié)果為字符串且輸出到屏幕上
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);
//運(yùn)行curl
$data = curl_exec($ch);
//返回結(jié)果
if ($data) {
curl_close($ch);
return $data;
} else {
$error = curl_errno($ch);
curl_close($ch);
throw new WxPayException("curl出錯(cuò)，錯(cuò)誤碼:$error");
}
}
//數(shù)組轉(zhuǎn)換成xml
private function arrayToXml($arr) {
$xml = "xml>";
foreach ($arr as $key => $val) {
if (is_array($val)) {
$xml .= "" . $key . ">" . arrayToXml($val) . "/" . $key . ">";
} else {
$xml .= "" . $key . ">" . $val . "/" . $key . ">";
}
}
$xml .= "/xml>";
return $xml;
}
//xml轉(zhuǎn)換成數(shù)組
private function xmlToArray($xml) {
//禁止引用外部xml實(shí)體
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() {
//統(tǒng)一下單接口
$unifiedorder = $this->unifiedorder();
// print_r($unifiedorder);
$parameters = array(
'appId' => $this->appid, //小程序ID
'timeStamp' => '' . time() . '', //時(shí)間戳
'nonceStr' => $this->createNoncestr(), //隨機(jī)串
'package' => 'prepay_id=' . $unifiedorder['prepay_id'], //數(shù)據(jù)包
'signType' => 'MD5'//簽名方式
);
//簽名
$parameters['paySign'] = $this->getSign($parameters);
return $parameters;
}
//作用：產(chǎn)生隨機(jī)字符串，不長(zhǎng)于32位
private function createNoncestr($length = 32) {
$chars = "abcdefghijklmnopqrstuvwxyz0123456789";
$str = "";
for ($i = 0; $i $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; } //作用：生成簽名 private function getSign($Obj) { foreach ($Obj as $k => $v) {
$Parameters[$k] = $v;
}
//簽名步驟一：按字典序排序參數(shù)
ksort($Parameters);
$String = $this->formatBizQueryParaMap($Parameters, false);
//簽名步驟二：在string后加入KEY
$String = $String . "key=" . $this->key;
//簽名步驟三：MD5加密
$String = md5($String);
//簽名步驟四：所有字符轉(zhuǎn)為大寫
$result_ = strtoupper($String);
return $result_;
}
///作用：格式化參數(shù)，簽名過程需要使用
private function formatBizQueryParaMap($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;
}
}
wx.request({
url: 'https://yourhost.com/wxpay/payfee.php',//改成你自己的鏈接
data:{
id: app.globalData.openid,//獲取用戶openid
fee:100 //商品價(jià)格
},
header: {
'Content-Type': 'application/x-www-form-urlencoded'
},
method: 'POST',
success: function (res) {
console.log(res.data);
console.log('調(diào)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(res);
},
'complete': function (res) {
console.log('complete');
}
});
},
fail: function (res) {
console.log(res.data)
}
});
So：在微信的異步通知后，也需要給微信服務(wù)器，返回一個(gè)信息，只不過微信的所有數(shù)據(jù)格式都是xml的，所以我們?cè)诜祷匾粋€(gè)數(shù)據(jù)給微信即可。
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