解码问题

@@ -37,7 +37,7 @@ class MailFun {
      * @time 2023/3/27 13:55
      * @time 2023/3/27 13:55
      */
      */
     public static function mb_coding(string $str,array $appcode=[]){
     public static function mb_coding(string $str,array $appcode=[]){
-        return (new Header())->decode(trim($str));
+        return (new Header())->decode(trim($str," \t\n\r"));
     }
     }