php微信支付之公众号支付功能

/**

• 统一下单
• @param string $openid 调用【网页授权获取用户信息】接口获取到用户在该公众号下的Openid
• @param float $totalFee 收款总费用 单位元
• @param string $outTradeNo 唯一的订单号
• @param string $orderName 订单名称
• @param string $notifyUrl 支付结果通知url 不要有问号
• @param string $timestamp 支付时间
• @return string
  /
  public function createJsBizPackage($openid,$totalFee,$timestamp)
  {
  $config = array(
  'mch_id' => $this->mchid,'appid' => $this->appid,'key' => $this->apiKey,);
  $orderName = iconv('GBK','UTF-8',$orderName);
  $unified = array(
  'appid' => $config['appid'],'attach' => 'pay',//商家数据包，原样返回，如果填写中文，请注意转换为utf-8
  'body' => $orderName,'mch_id' => $config['mch_id'],'nonce_str' => self::createNonceStr(),'notify_url' => $notifyUrl,'openid' => $openid,//rade_type=JSAPI，此参数必传
  'out_trade_no' => $outTradeNo,'spbill_create_ip' => '127.0.0.1','total_fee' => intval($totalFee 100),//单位 转为分
  'trade_type' => 'JSAPI',);
  $unified['sign'] = self::getSign($unified,$config['key']);
  $responseXml = self::curlPost('https://api.mch.weixin.qq.com/pay/unifiedorder',self::arrayToXml($unified));
  $unifiedOrder = simplexml_load_string($responseXml,'SimpleXMLElement',LIBXML_NOCDATA);
  if ($unifiedOrder === false) {
  die('parse xml error');
  }
  if ($unifiedOrder->return_code != 'SUCCESS') {
  die($unifiedOrder->return_msg);
  }
  if ($unifiedOrder->result_code != 'SUCCESS') {
  die($unifiedOrder->err_code);
  }
  $arr = array(
  "appId" => $config['appid'],"timeStamp" => "$timestamp",//这里是字符串的时间戳，不是int，所以需加引号
  "nonceStr" => self::createNonceStr(),"package" => "prepay_id=" . $unifiedOrder->prepay_id,"signType" => 'MD5',);
  $arr['paySign'] = self::getSign($arr,$config['key']);
  return $arr;
  }

public static function curlGet($url = '',$options = array())
{
$ch = curl_init($url);
curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_TIMEOUT,30);
if (!empty($options)) {
curl_setopt_array($ch,$options);
}
//https请求 不验证证书和host
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);
curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}

public static function curlPost($url = '',$postData = '',$options = array())
{
if (is_array($postData)) {
$postData = http_build_query($postData);
}
$ch = curl_init();
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,CURLOPT_POSTFIELDS,$postData);
curl_setopt($ch,30); //设置cURL允许执行的最长秒数
if (!empty($options)) {
curl_setopt_array($ch,false);
$data = curl_exec($ch);
curl_close($ch);
return $data;
}

public static function createNonceStr($length = 16)
{
$chars = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789';
$str = '';
for ($i = 0; $i < $length; $i++) {
$str .= substr($chars,mt_rand(0,strlen($chars) - 1),1);
}
return $str;
}
public static function arrayToXml($arr)
{
$xml = "";
foreach ($arr as $key => $val) {
if (is_numeric($val)) {
$xml .= "<" . $key . ">" . $val . "</" . $key . ">";
} else
$xml .= "<" . $key . "><![CDATA[" . $val . "]]></" . $key . ">";
}
$xml .= "";
file_put_contents('1.txt',$xml);
return $xml;
}

public static function getSign($params,$key)
{
ksort($params,SORT_STRING);
$unSignParaString = self::formatQueryParaMap($params,false);
$signStr = strtoupper(md5($unSignParaString . "&key=" . $key));
return $signStr;
}
protected static function formatQueryParaMap($paraMap,$urlEncode = false)
{
$buff = "";
ksort($paraMap);
foreach ($paraMap as $k => $v) {
if (null != $v && "null" != $v) {
if ($urlEncode) {
$v = urlencode($v);
}
$buff .= $k . "=" . $v . "&";
}
}
$reqPar = '';
if (strlen($buff) > 0) {
$reqPar = substr($buff,strlen($buff) - 1);
}
return $reqPar;
}
}
?>

github

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