解析

@@ -292,20 +292,25 @@ class Header{
     public static function mime_decode(string $str):string {
 
         $str = trim($str);
-        if(preg_match("/^=\?([a-z0-9-.]{3,})\?[bq]\?/i",$str,$code)){
+        $str = explode("\r\n",$str);
+        foreach ($str as $k=>$s){
+            $s = trim($s);
+            if(preg_match("/^=\?([a-z0-9-.]{3,})\?[bq]\?/i",$s,$code)){
                 // 解码 这个函数好像已经转码了，
 //            iso-8859-8-i php 好像没有这个编码 ，阿拉伯 iso-8859-8
 //            =?iso-8859-8-i?B?4eTu+eog7PTw6en66iDg7CDn4fj6IERjb20gLSD08OnkIO7xIDgyNzUz?=
-            $str = str_replace("=?{$code[1]}?",'=?'.Fun::getEncodingAliases($code[1]).'?',$str);
+                $s = str_replace("=?{$code[1]}?",'=?'.Fun::getEncodingAliases($code[1]).'?',$s);
 
-            $str = mb_decode_mimeheader($str);
+                $s = mb_decode_mimeheader($s);
 
-            return $str;
+                $str[$k] = $s;
                 // 转字符编码
 //            return mb_convert_encoding($str,'utf-8',$code[1]);
             }
+        }
+
 
-        return $str;
+        return implode(" ",$str);
     }