appid = $appid; $this->mch_id = $mch_id; $this->notify_url = $notify_url; $this->key = $key;
}
public function unifiedOrder( $params ){ $this->body = $params['body']; $this->out_trade_no = $params['out_trade_no']; $this->total_fee = $params['total_fee']; $this->trade_type = $params['trade_type']; $this->nonce_str = $this->genRandomString(); $this->spbill_create_ip = $_SERVER['REMOTE_ADDR']; $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->nonce_str; $this->params['body'] = $this->body; $this->params['out_trade_no'] = $this->out_trade_no; $this->params['total_fee'] = $this->total_fee; $this->params['spbill_create_ip'] = $this->spbill_create_ip; $this->params['notify_url'] = $this->notify_url; $this->params['trade_type'] = $this->trade_type;//获取签名数据
$this->sign = $this->MakeSign( $this->params ); $this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::UNIFIEDORDER_URL); if( !$response ){ return false;
}
$result = $this->xml_to_data( $response ); if( !empty($result['result_code']) && !empty($result['err_code']) ){
$result['err_msg'] = $this->error_code( $result['err_code'] );
} return $result;
}
public function unifiedOrder2( $params ){ $this->body = $params['body']; $this->out_trade_no = $params['out_trade_no']; $this->total_fee = $params['total_fee']; $this->trade_type = $params['trade_type']; $this->nonce_str = $this->genRandomString(); $this->spbill_create_ip = $_SERVER['REMOTE_ADDR']; $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->nonce_str; $this->params['body'] = $this->body; $this->params['out_trade_no'] = $this->out_trade_no; $this->params['total_fee'] = $this->total_fee; $this->params['spbill_create_ip'] = $this->spbill_create_ip; $this->params['notify_url'] = $this->notify_url; $this->params['trade_type'] = $this->trade_type; $this->params['openid'] = $params['openid'];//获取签名数据
$this->sign = $this->MakeSign( $this->params ); $this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::UNIFIEDORDER_URL); if( !$response ){ return false;
}
$result = $this->xml_to_data( $response ); if( !empty($result['result_code']) && !empty($result['err_code']) ){
$result['err_msg'] = $this->error_code( $result['err_code'] );
} return $result;
}
public function orderQuery( $out_trade_no ){ $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->genRandomString(); $this->params['out_trade_no'] = $out_trade_no;//获取签名数据
$this->sign = $this->MakeSign( $this->params ); $this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::ORDERQUERY_URL); if( !$response ){ return false;
}
$result = $this->xml_to_data( $response ); if( !empty($result['result_code']) && !empty($result['err_code']) ){
$result['err_msg'] = $this->error_code( $result['err_code'] );
} return $result;
}
public function closeOrder( $out_trade_no ){ $this->params['appid'] = $this->appid; $this->params['mch_id'] = $this->mch_id; $this->params['nonce_str'] = $this->genRandomString(); $this->params['out_trade_no'] = $out_trade_no;//获取签名数据
$this->sign = $this->MakeSign( $this->params ); $this->params['sign'] = $this->sign;
$xml = $this->data_to_xml($this->params);
$response = $this->postXmlCurl($xml, self::API_URL_PREFIX.self::CLOSEORDER_URL); if( !$response ){ return false;
}
$result = $this->xml_to_data( $response ); return $result;
}
public function getNotifyData(){//获取通知的数据
$xml = $GLOBALS['HTTP_RAW_POST_DATA']; //$xml = file_get_contents('php://input');
$data = array(); if( empty($xml) ){ return false;
}
$data = $this->xml_to_data( $xml ); if( !empty($data['return_code']) ){ if( $data['return_code'] == 'FAIL' ){ return false;
}
} return $data;
}
public function replyNotify(){
$data['return_code'] = 'SUCCESS';
$data['return_msg'] = 'OK';
$xml = $this->data_to_xml( $data ); echo $xml; die();
}
public function getAppPayParams( $prepayid ){
$data['appid'] = $this->appid;
$data['partnerid'] = $this->mch_id;
$data['prepayid'] = $prepayid;
$data['package'] = 'Sign=WXPay';
$data['noncestr'] = $this->genRandomString();
$data['timestamp'] = time();
$data['sign'] = $this->MakeSign( $data ); return $data;
}
public function MakeSign( $params ){//签名步骤一：按字典序排序数组参数
ksort($params);
$string = $this->ToUrlParams($params);//签名步骤二：在string后加入KEY
$string = $string . "&key=".$this->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;
}
public function ToUrlParams( $params ){
$string = ''; if( !empty($params) ){
$array = array(); foreach( $params as $key => $value ){
$array[] = $key.'='.$value;
}
$string = implode("&",$array);
} return $string;
}
public function data_to_xml( $params ){ if(!is_array($params)|| count($params) <= 0)
{ return false;
}
$xml = ""; foreach ($params as $key=>$val)
{ if (is_numeric($val)){
$xml.="<".$key.">".$val."";
}else{
$xml.="<".$key.">";
}
}
$xml.=" "; return $xml;
}
public function xml_to_data($xml){ if(!$xml){ return false;
}//将XML转为array//禁止引用外部xml实体
libxml_disable_entity_loader(true);
$data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true); return $data;
}
private static function getMillisecond(){//获取毫秒的时间戳
$time = explode ( " ", microtime () );
$time = $time[1] . ($time[0] * 1000);
$time2 = explode( ".", $time );
$time = $time2[0]; return $time;
}
private function genRandomString($len = 32) {
$chars = array( "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z", "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z", "0", "1", "2", "3", "4", "5", "6", "7", "8", "9"
);
$charsLen = count($chars) - 1;// 将数组打乱
shuffle($chars);
$output = ""; for ($i = 0; $i < $len; $i++) {
$output .= $chars[mt_rand(0, $charsLen)];
} return $output;
}
private function postXmlCurl($xml, $url, $useCert = false, $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($ch,CURLOPT_SSL_VERIFYHOST,2);//设置header
curl_setopt($ch, CURLOPT_HEADER, FALSE);//要求结果为字符串且输出到屏幕上
curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE); if($useCert == true){//设置证书//使用证书：cert 与 key 分别属于两个.pem文件
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');//curl_setopt($ch,CURLOPT_SSLCERT, WxPayConfig::SSLCERT_PATH);
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');//curl_setopt($ch,CURLOPT_SSLKEY, WxPayConfig::SSLKEY_PATH);
}//post提交方式
curl_setopt($ch, CURLOPT_POST, TRUE);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);//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); return false;
}
}
public function error_code( $code ){
$errList = array( 'NOAUTH' => '商户未开通此接口权限', 'NOTENOUGH' => '用户帐号余额不足', 'ORDERNOTEXIST' => '订单号不存在', 'ORDERPAID' => '商户订单已支付，无需重复操作', 'ORDERCLOSED' => '当前订单已关闭，无法支付', 'SYSTEMERROR' => '系统错误!系统超时', 'APPID_NOT_EXIST' => '参数中缺少APPID', 'MCHID_NOT_EXIST' => '参数中缺少MCHID', 'APPID_MCHID_NOT_MATCH' => 'appid和mch_id不匹配', 'LACK_PARAMS' => '缺少必要的请求参数', 'OUT_TRADE_NO_USED' => '同一笔交易不能多次提交', 'SIGNERROR' => '参数签名结果不正确', 'XML_FORMAT_ERROR' => 'XML格式错误', 'REQUIRE_POST_METHOD' => '未使用post传递参数 ', 'POST_DATA_EMPTY' => 'post数据不能为空', 'NOT_UTF8' => '未使用指定编码格式',
); if( array_key_exists( $code , $errList ) ){ return $errList[$code];
}
}
}退款方法$wechatAppPay = new wechatAppPay($PAYAPPID, $PAYMCHID, $NOTIFY_URL, $PAYKEY); //小程序的appid
$param['appid'] = $PAYAPPID; //商户号
$param['mch_id'] = $PAYMCHID; //随机字符串
$nonce_str = $this->random(15);//随机数生成
$param['nonce_str'] = $nonce_str; //商户订单号
$param['out_trade_no'] = $out_trade_no; //商户退款单号
$out_refund_no = $this->random(15);//生成随机数
$param['out_refund_no'] = $out_refund_no; //订单金额
$param['total_fee'] = 1 * 100; //退款金额
$param['refund_fee'] =1* 100; //退款原因
$param['refund_desc'] = '拼团失败';
$stringSignTemp = $wechatAppPay->MakeSign($param);
$param['sign'] = $stringSignTemp;
$xml_data = $wechatAppPay->data_to_xml($param);
$data = $this->curl_post_ssl('https://api.mch.weixin.qq.com/secapi/pay/refund', $xml_data, '../../' . $cert_pem, '../../' . $key_pem);// '../../wxcertificate/apiclient_cert.pem','../../wxcertificate/apiclient_key.pem'
$res = $wechatAppPay->xml_to_data($data);退款成功状态：
if ($res['result_code'] == 'SUCCESS') {//退款成功}引用的方法
//file_cert_pem,file_key_pem两个退款必须的文件
function curl_post_ssl($url, $vars,$file_cert_pem,$file_key_pem, $second = 30, $aHeader = array())
{
$ch = curl_init(); //超时时间
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); //这里设置代理，如果有的话
//curl_setopt($ch,CURLOPT_PROXY, '10.206.30.98');
//curl_setopt($ch,CURLOPT_PROXYPORT, 8080);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false); //以下两种方式需选择一种
//第一种方法，cert 与 key 分别属于两个.pem文件
//默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLCERTTYPE,'PEM');// curl_setopt($ch,CURLOPT_SSLCERT,getcwd().'/cert.pem');
curl_setopt($ch,CURLOPT_SSLCERT,$file_cert_pem); //默认格式为PEM，可以注释
curl_setopt($ch,CURLOPT_SSLKEYTYPE,'PEM');// curl_setopt($ch,CURLOPT_SSLKEY,getcwd().'/private.pem');
curl_setopt($ch,CURLOPT_SSLKEY,$file_key_pem); //第二种方式，两个文件合成一个.pem文件// curl_setopt($ch, CURLOPT_SSLCERT, getcwd() . '/all.pem');
if (count($aHeader) >= 1) {
curl_setopt($ch, CURLOPT_HTTPHEADER, $aHeader);
}
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $vars);
$data = curl_exec($ch); if ($data) {
curl_close($ch); return $data;
} else {
$error = curl_errno($ch);// echo "call faild, errorCode:$errorn";
curl_close($ch); return false;
}
}
作者：程大哥T_T
链接：https://www.jianshu.com/p/149d4e9b74e1
