我這個也是參考別人寫的。有不明白的朋友可以問我
public function unifiedorder($order_no, $openid, $total_fee, $attach, $order_id, $user_id){
// 當前時間
$time = time();
// 生成隨機字符串
$nonceStr = md5($time . $openid);
// API參數
$params = [
'appid' => $this->appid, ? //微信分配的小程序id
'attach' => $attach, ? //附加數據，在查詢API和支付通知中原樣返回，可作為自定義參數使用。
'body' => '會員卡', ? //募捐描述
'mch_id' => $this->mchid, //微信支付分配的商戶號
'nonce_str' => $nonceStr, ? //隨機字符串，32位以內
'notify_url' => $this->notify_url, // base_url() . 'notice.php?s=/task/notify/order/wxapp_id/'.$wxapp_id, // 異步通知地址
'openid' => $openid, ? //用戶標識；trade_type=JSAPI，此參數必傳，用戶在商戶appid下的唯壹標識。
'out_trade_no' => $order_no, ? //商戶賬單號
'spbill_create_ip' => \request()->ip(), //終端IP；支持IPV4和IPV6兩種格式的IP地址。調用微信支付API的機器IP
'total_fee' => (int)$total_fee * 100, // 價格:單位分 ? // 價格:單位分
'trade_type' => 'JSAPI', ? //交易類型
];
// 生成簽名
$params['sign'] = $this->makeSign($params);? //這個地方最坑，需要的是配置 1、appid和商戶號必須是綁定的狀態
// 請求API
$url = '/pay/unifiedorder';
$result = $this->post($url, $this->toXml($params));
$prepay = $this->fromXml($result);
//添加preapay_id
$data = [
'user_id' => $user_id,
'order_id' => $order_id,
'attach' => json_encode($attach),
'prepay_id' => $prepay['prepay_id'],
];
(new AppleWxPrepay())->addInfo($data);
// 請求失敗
if ($prepay['return_code'] === 'FAIL') {
return [API_CODE_NAME => 2000004, API_MSG_NAME => $prepay['return_msg']];
}
if ($prepay['result_code'] === 'FAIL') {
return [API_CODE_NAME => 2000004, API_MSG_NAME => $prepay['err_code_des']];
}
// 生成 nonce_str 供前端使用
$paySign = $this->makePaySign($params['nonce_str'], $prepay['prepay_id'], $time);
return [
'prepay_id' => $prepay['prepay_id'],
'nonceStr' => $nonceStr,
'timeStamp' => (string)$time,
'paySign' => $paySign
];
}
/**
* 生成簽名
* @param $values
* @return string 本函數不覆蓋sign成員變量，如要設置簽名需要調用SetSign方法賦值
*/
private function makeSign($values)
{
//簽名步驟壹：按字典序排序參數
ksort($values);
$string = $this->toUrlParams($values);
//簽名步驟二：在string後加入KEY
$string = $string . '&key=' . $this->apikey;
//簽名步驟三：MD5加密
$string = md5($string);
//簽名步驟四：所有字符轉為大寫
$result = strtoupper($string);
return $result;
}
/**
* 格式化參數格式化成url參數
* @param $values
* @return string
*/
private function toUrlParams($values)
{
$buff = '';
foreach ($values as $k => $v) {
if ($k != 'sign' && $v != '' && !is_array($v)) {
$buff .= $k . '=' . $v . '&';
}
}
return trim($buff, '&');
}
/**
* 模擬POST請求
* @param $url
* @param array $data
* @param bool $useCert
* @param array $sslCert
* @return mixed
*/
public function post($url, $data = [], $useCert = false, $sslCert = [])
{
$header = [
'Content-type: application/json; charset=UTF8'
];
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $url);
curl_setopt($curl, CURLOPT_HTTPHEADER, $header);
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_POST, TRUE);
curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
if ($useCert == true) {
// 設置證書：cert 與 key 分別屬於兩個.pem文件
curl_setopt($curl, CURLOPT_SSLCERTTYPE, 'PEM');
curl_setopt($curl, CURLOPT_SSLCERT, $sslCert['certPem']);
curl_setopt($curl, CURLOPT_SSLKEYTYPE, 'PEM');
curl_setopt($curl, CURLOPT_SSLKEY, $sslCert['keyPem']);
}
$result = curl_exec($curl);
curl_close($curl);
return $result;
}
/**
* 輸出xml字符
* @param $values
* @return bool|string
*/
private function toXml($values)
{
if (!is_array($values) || count($values) <= 0) {
return false;
}
$xml = "<xml>";
foreach ($values as $key => $val) {
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
} else {
$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
}
}
$xml .= "</xml>";
return $xml;
}
/**
* 將xml轉為array
* @param $xml
* @return mixed
*/
private function fromXml($xml)
{
// 禁止引用外部xml實體
libxml_disable_entity_loader(true);
return json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
}
/**
* 生成paySign
* @param $nonceStr
* @param $prepay_id
* @param $timeStamp
* @return string
*/
private function makePaySign($nonceStr, $prepay_id, $timeStamp)
{
$data = [
'appId' => $this->appid,
'nonceStr' => $nonceStr,
'package' => 'prepay_id=' . $prepay_id,
'signType' => 'MD5',
'timeStamp' => $timeStamp,
];
// 簽名步驟壹：按字典序排序參數
ksort($data);
$string = $this->toUrlParams($data);
// 簽名步驟二：在string後加入KEY
$string = $string . '&key=' . $this->apikey;
// 簽名步驟三：MD5加密
$string = md5($string);
// 簽名步驟四：所有字符轉為大寫
$result = strtoupper($string);
return $result;
}
/*********************************微信回調**********************/
public function getNotify()
{
if (!$xml = file_get_contents('php://input')) {
$this->returnCode(50000001, 'Not found DATA');
}
// 將服務器返回的XML數據轉化為數組
$data = $this->fromXml($xml);
$payLog = new ApplePayLog();
// 記錄日誌
$payLog->addInfo(['content'=>json_encode($xml)]);
$payLog->addInfo(['content'=>json_encode($data)]);
// 實例化賬單模型
$OrderModel = new AppleOrder();
// 賬單信息
$orderInfo = $OrderModel->getInfo(['id'=>$data['attach']],'*');
if (empty($orderInfo)) {
$this->returnCode(50000001, '賬單不存在');
}
if($orderInfo['pay_status'] != 1 || !empty($orderInfo['pay_time'])){
$this->returnCode(50000001,'訂單已支付，請勿再次支付');
}
// 保存微信服務器返回的簽名sign
$dataSign = $data['sign'];
$return_code = $data['return_code'];
$result_code = $data['result_code'];
$data['body'] = '會員卡';
$data['spbill_create_ip'] = \request()->ip();
$data['notify_url'] = $this->notify_url;
// sign 與 s 參數 不參與簽名算法
unset($data['sign']);
unset($data['transaction_id']);
unset($data['coupon_id']);
unset($data['coupon_type']);
unset($data['coupon_count']);
unset($data['coupon_fee']);
unset($data['time_end']);
unset($data['return_code']);
unset($data['result_code']);
unset($data['is_subscribe']);
unset($data['fee_type']);
unset($data['bank_type']);
unset($data['bank_type']);
// 生成簽名
$sign = $this->makeSign($data);
// 判斷簽名是否正確? 判斷支付狀態
if (($sign === $dataSign) && ($return_code == 'SUCCESS') && ($result_code == 'SUCCESS')) {
$OrderModel->startTrans();
try {
// 賬單支付成功業務處理
$appleOrderInfo = $OrderModel->where(['id'=>$orderInfo['id']])->lock(true)->find();
$result = $appleOrderInfo->addInfo(['pay_status'=>2,'pay_time'=>time()],['id'=>$orderInfo['id']]);
if(!$result){
$OrderModel->rollback();
$this->returnCode(5000003, '修改訂單失敗，失敗原因：'.$OrderModel->getError());
}
$appleUserModel = new AppleUser();
$appleUserInfo =? $appleUserModel->where(['openid'=>$orderInfo['openid']])->lock(true)->find();
$appleUser = $appleUserInfo->where(['openid'=>$orderInfo['openid']])->setInc('moxibustion',$orderInfo['moxibustion']);
if(!$appleUser){
$OrderModel->rollback();
$this->returnCode(5000003, '添加會員針灸次數失敗，失敗原因：'.$appleUserModel->getError());
}
}catch (\Exception $exception){
$OrderModel->rollback();
$this->returnCode(5000003, '操作失敗，失敗原因：'.$exception->getMessage());
}
$OrderModel->commit();
// 返回狀態
die(json(['code'=>0,'支付成功']));
}
// 返回狀態
$this->returnCode(2000003, '簽名失敗');
}