/**
*
* 构造获取open和access_toke的url地址
* @param string $code，微信跳转带回的code
*
* @return 请求的url
*/
private function __CreateOauthUrlForOpenid($code)
{
$urlObj['appid'] = Wxpay::getConfig('appid');
$urlObj['secret'] = Wxpay::getConfig('appsecret');
$urlObj['code'] = $code;
$urlObj['grant_type'] = 'authorization_code';
$bizString = $this->toUrlParams($urlObj);
return 'https://api.weixin.qq.com/sns/oauth2/access_token?' . $bizString;
}
/**
* 以post方式提交xml到对应的接口url
*
* @param string $xml 需要post的xml数据
* @param string $url url
* @param bool $useCert 是否需要证书，默认不需要
* @param int $second url执行超时时间，默认30s
* @throws WxPayException
*/
private function postXmlCurl($xml, $url, $useCert = false, $second = 30)
{
$ch = curl_init();
//设置超时
curl_setopt($ch, CURLOPT_TIMEOUT, $second);
//如果有配置代理这里就设置代理
if (Wxpay::getConfig('curl_proxy_host') != '0.0.0.0' && Wxpay::getConfig('curl_proxy_port') != 0) {
curl_setopt($ch, CURLOPT_PROXY, Wxpay::getConfig('curl_proxy_host'));
curl_setopt($ch, CURLOPT_PROXYPORT, Wxpay::getConfig('curl_proxy_port'));
}
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, TRUE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
//严格校验
//设置header
curl_setopt($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, Wxpay::getConfig('sslcert_path'));
curl_setopt($ch, CURLOPT_SSLKEYTYPE, 'PEM');
curl_setopt($ch, CURLOPT_SSLKEY, Wxpay::getConfig('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);
throw new WxPayException('curl出错，错误码：' . $error);
}
}
/**
* 生成签名
* @return 签名，本函数不覆盖sign成员变量，如要设置签名需要调用setSign方法赋值
*/
public function makeSign()
{
//签名步骤一：按字典序排序参数
ksort($this->values);
$string = $this->toUrlParams();
//签名步骤二：在string后加入KEY
$string = $string . '&key=' . Wxpay::getConfig('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;
}