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374 lines
11 KiB
374 lines
11 KiB
<?php
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class wechatAppPay
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{
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//接口API URL前缀
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const API_URL_PREFIX = 'https://api.mch.weixin.qq.com';
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//下单地址URL
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const UNIFIEDORDER_URL = "/pay/unifiedorder";
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//查询订单URL
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const ORDERQUERY_URL = "/pay/orderquery";
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//关闭订单URL
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const CLOSEORDER_URL = "/pay/closeorder";
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//公众账号ID
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private $wxappid;
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//商户号
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private $mch_id;
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//随机字符串
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private $nonce_str;
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//签名
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private $sign;
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//商品描述
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private $body;
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//商户订单号
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private $out_trade_no;
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//支付总金额
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private $total_fee;
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//终端IP
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private $spbill_create_ip;
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//支付结果回调通知地址
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private $notify_url;
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//交易类型
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private $trade_type;
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//支付密钥
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private $key;
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//证书路径
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private $SSLCERT_PATH;
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private $SSLKEY_PATH;
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//所有参数
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private $params = array();
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public function __construct($wxappid, $mch_id, $notify_url, $key)
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{
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$this->appid = $wxappid;
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$this->mch_id = $mch_id;
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$this->notify_url = $notify_url;
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$this->key = $key;
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}
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/**
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* 下单方法
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* @param $params 下单参数
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*/
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public function unifiedOrder($params)
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{
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$this->body = $params['body'];
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$this->out_trade_no = $params['out_trade_no'];
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$this->total_fee = $params['total_fee'];
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$this->trade_type = $params['trade_type'];
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$this->nonce_str = $this->genRandomString();
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$this->spbill_create_ip = $_SERVER['REMOTE_ADDR'];
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$this->params['appid'] = $this->appid;
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$this->params['mch_id'] = $this->mch_id;
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$this->params['nonce_str'] = $this->nonce_str;
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$this->params['body'] = $this->body;
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$this->params['out_trade_no'] = $this->out_trade_no;
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$this->params['total_fee'] = $this->total_fee;
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$this->params['spbill_create_ip'] = $this->spbill_create_ip;
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$this->params['notify_url'] = $this->notify_url;
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$this->params['trade_type'] = $this->trade_type;
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//获取签名数据
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$this->sign = $this->MakeSign($this->params);
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$this->params['sign'] = $this->sign;
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$xml = $this->data_to_xml($this->params);
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$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::UNIFIEDORDER_URL);
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if (!$response) {
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return false;
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}
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$result = $this->xml_to_data($response);
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if (!empty($result['result_code']) && !empty($result['err_code'])) {
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$result['err_msg'] = $this->error_code($result['err_code']);
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}
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return $result;
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}
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/**
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* 查询订单信息
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* @param $out_trade_no 订单号
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* @return array
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*/
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public function orderQuery($out_trade_no)
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{
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$this->params['appid'] = $this->appid;
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$this->params['mch_id'] = $this->mch_id;
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$this->params['nonce_str'] = $this->genRandomString();
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$this->params['out_trade_no'] = $out_trade_no;
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//获取签名数据
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$this->sign = $this->MakeSign($this->params);
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$this->params['sign'] = $this->sign;
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$xml = $this->data_to_xml($this->params);
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$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::ORDERQUERY_URL);
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if (!$response) {
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return false;
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}
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$result = $this->xml_to_data($response);
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if (!empty($result['result_code']) && !empty($result['err_code'])) {
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$result['err_msg'] = $this->error_code($result['err_code']);
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}
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return $result;
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}
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/**
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* 关闭订单
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* @param $out_trade_no 订单号
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* @return array
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*/
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public function closeOrder($out_trade_no)
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{
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$this->params['appid'] = $this->appid;
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$this->params['mch_id'] = $this->mch_id;
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$this->params['nonce_str'] = $this->genRandomString();
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$this->params['out_trade_no'] = $out_trade_no;
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//获取签名数据
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$this->sign = $this->MakeSign($this->params);
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$this->params['sign'] = $this->sign;
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$xml = $this->data_to_xml($this->params);
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$response = $this->postXmlCurl($xml, self::API_URL_PREFIX . self::CLOSEORDER_URL);
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if (!$response) {
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return false;
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}
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$result = $this->xml_to_data($response);
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return $result;
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}
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/**
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*
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* 获取支付结果通知数据
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* return array
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*/
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public function getNotifyData()
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{
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//获取通知的数据
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$xml = $GLOBALS['HTTP_RAW_POST_DATA'];
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$data = array();
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if (empty($xml)) {
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return false;
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}
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$data = $this->xml_to_data($xml);
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if (!empty($data['return_code'])) {
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if ($data['return_code'] == 'FAIL') {
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return false;
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}
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}
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return $data;
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}
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/**
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* 接收通知成功后应答输出XML数据
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* @param string $xml
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*/
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public function replyNotify()
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{
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$data['return_code'] = 'SUCCESS';
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$data['return_msg'] = 'OK';
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$xml = $this->data_to_xml($data);
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echo $xml;
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die();
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}
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/**
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* 生成APP端支付参数
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* @param $prepayid 预支付id
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*/
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public function getAppPayParams($prepayid)
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{
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$data['appid'] = $this->appid;
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$data['partnerid'] = $this->mch_id;
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$data['prepayid'] = $prepayid;
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$data['package'] = 'Sign=WXPay';
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$data['noncestr'] = $this->genRandomString();
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$data['timestamp'] = time();
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$data['sign'] = $this->MakeSign($data);
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return $data;
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}
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/**
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* 生成签名
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* @return 签名
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*/
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public function MakeSign($params)
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{
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//签名步骤一：按字典序排序数组参数
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ksort($params);
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$string = $this->ToUrlParams($params);
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//签名步骤二：在string后加入KEY
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$string = $string . "&key=" . $this->key;
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//签名步骤三：MD5加密
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$string = md5($string);
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//签名步骤四：所有字符转为大写
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$result = strtoupper($string);
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return $result;
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}
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/**
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* 将参数拼接为url: key=value&key=value
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* @param $params
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* @return string
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*/
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public function ToUrlParams($params)
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{
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$string = '';
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if (!empty($params)) {
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$array = array();
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foreach ($params as $key => $value) {
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$array[] = $key . '=' . $value;
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}
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$string = implode("&", $array);
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}
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return $string;
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}
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/**
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* 输出xml字符
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* @param $params 参数名称
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* return string 返回组装的xml
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**/
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public function data_to_xml($params)
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{
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if (!is_array($params) || count($params) <= 0) {
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return false;
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}
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$xml = "<xml>";
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foreach ($params as $key => $val) {
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if (is_numeric($val)) {
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$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
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} else {
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$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
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}
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}
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$xml .= "</xml>";
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return $xml;
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}
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/**
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* 将xml转为array
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* @param string $xml
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* return array
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*/
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public function xml_to_data($xml)
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{
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if (!$xml) {
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return false;
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}
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//将XML转为array
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//禁止引用外部xml实体
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libxml_disable_entity_loader(true);
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$data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
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return $data;
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}
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/**
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* 获取毫秒级别的时间戳
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*/
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private static function getMillisecond()
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{
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//获取毫秒的时间戳
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$time = explode(" ", microtime());
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$time = $time[1] . ($time[0] * 1000);
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$time2 = explode(".", $time);
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$time = $time2[0];
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return $time;
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}
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/**
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* 产生一个指定长度的随机字符串,并返回给用户
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* @param type $len 产生字符串的长度
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* @return string 随机字符串
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*/
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private function genRandomString($len = 32)
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{
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$chars = array(
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"a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k",
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"l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v",
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"w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G",
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"H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R",
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"S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2",
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"3", "4", "5", "6", "7", "8", "9"
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);
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$charsLen = count($chars) - 1;
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// 将数组打乱
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shuffle($chars);
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$output = "";
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for ($i = 0; $i < $len; $i++) {
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$output .= $chars[mt_rand(0, $charsLen)];
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}
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return $output;
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}
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/**
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* 以post方式提交xml到对应的接口url
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*
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* @param string $xml 需要post的xml数据
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* @param string $url url
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* @param bool $useCert 是否需要证书，默认不需要
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* @param int $second url执行超时时间，默认30s
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* @throws WxPayException
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*/
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private function postXmlCurl($xml, $url, $useCert = false, $second = 30)
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{
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$ch = curl_init();
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//设置超时
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curl_setopt($ch, CURLOPT_TIMEOUT, $second);
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curl_setopt($ch, CURLOPT_URL, $url);
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curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
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curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
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//设置header
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curl_setopt($ch, CURLOPT_HEADER, FALSE);
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//要求结果为字符串且输出到屏幕上
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);
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if ($useCert == true) {
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//设置证书
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//使用证书：cert 与 key 分别属于两个.pem文件
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curl_setopt($ch, CURLOPT_SSLCERTTYPE, 'PEM');
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//curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::SSLCERT_PATH);
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curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
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//curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::SSLKEY_PATH);
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}
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//post提交方式
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curl_setopt($ch, CURLOPT_POST, TRUE);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
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//运行curl
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$data = curl_exec($ch);
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//返回结果
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if ($data) {
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curl_close($ch);
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return $data;
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} else {
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$error = curl_errno($ch);
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curl_close($ch);
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return false;
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}
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}
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/**
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* 错误代码
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* @param $code 服务器输出的错误代码
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* return string
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*/
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public function error_code($code)
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{
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$errList = array(
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'NOAUTH' => '商户未开通此接口权限',
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'NOTENOUGH' => '用户帐号余额不足',
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'ORDERNOTEXIST' => '订单号不存在',
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'ORDERPAID' => '商户订单已支付，无需重复操作',
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'ORDERCLOSED' => '当前订单已关闭，无法支付',
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'SYSTEMERROR' => '系统错误!系统超时',
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'APPID_NOT_EXIST' => '参数中缺少APPID',
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'MCHID_NOT_EXIST' => '参数中缺少MCHID',
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'APPID_MCHID_NOT_MATCH' => 'appid和mch_id不匹配',
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'LACK_PARAMS' => '缺少必要的请求参数',
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'OUT_TRADE_NO_USED' => '同一笔交易不能多次提交',
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'SIGNERROR' => '参数签名结果不正确',
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'XML_FORMAT_ERROR' => 'XML格式错误',
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'REQUIRE_POST_METHOD' => '未使用post传递参数 ',
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'POST_DATA_EMPTY' => 'post数据不能为空',
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'NOT_UTF8' => '未使用指定编码格式',
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);
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if (array_key_exists($code, $errList)) {
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return $errList[$code];
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}
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}
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} |