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@@ -37,7 +37,9 @@ class MailFun {
      * @time 2023/3/27 13:55
      */
     public static function mb_coding(string $str,array $appcode=[]){
-        $str = (new Header())->decode(trim($str," \t\n\r"));
+        $str = trim($str," \t\n\r");
+        preg_match("/^=\?(.*)\?/U",$str,$code);
+        $str = (new Header())->decode($str);
 //        if(str_starts_with($str, '=?')){
 //            try {
 //                $encode = @mb_detect_encoding($str, array_merge(array("ASCII",'UTF-8',"GB2312","GBK",'BIG5'),$appcode));
@@ -48,6 +50,9 @@ class MailFun {
 //
 //            }
 //        }
+        if(($code[1]??'utf-8') != 'utf-8'){
+            $str = mb_convert_encoding($str, 'UTF-8', $code[1]);
+        }
 
         return $str;
     }