wechat-curl配置变更

@@ -522,6 +522,10 @@ class WxPayApi
     private static function postXmlCurl($xml, $url, $useCert = false, $second = 30)
     private static function postXmlCurl($xml, $url, $useCert = false, $second = 30)
     {
     {
         $ch = curl_init();
         $ch = curl_init();
+        //设置curl默认访问为IPv4
+        if (defined('CURLOPT_IPRESOLVE') && defined('CURL_IPRESOLVE_V4')) {
+            curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+        }
         //设置超时
         //设置超时
         curl_setopt($ch, CURLOPT_TIMEOUT, $second);
         curl_setopt($ch, CURLOPT_TIMEOUT, $second);