body 解析

@@ -523,11 +523,23 @@ function get_email_uuid($subject,$udate,$form,$to,$size){
  * @time 2024/8/29 10:51
  */
 function mb_iconv($str, $to, $from = null) {
-    try {
-        return mb_convert_encoding($str, $to, $from);
-    }catch (Throwable $e){
-        return $str;
+    if($str){
+        try {
+            $s = mb_convert_encoding($str, $to, $from);
+            if($s){
+                return $s;
+            }
+        }catch (Throwable $e){
+            if($from){
+                $s = @iconv($from,$to,$str);
+                if($s){
+                    return $s;
+                }
+            }
+
+        }
     }
+    return $str;
 }
 
 

@@ -28,11 +28,7 @@ class Fun {
         $from = self::getEncodingAliases($from);
 
 
-        try {
-            return mb_convert_encoding($str,$to,$from);
-        }catch (\Throwable $e){}
-
-        return mb_convert_encoding($str,$to);
+        return mb_iconv($str,$to,$from);
     }
 
 

@@ -87,7 +87,7 @@ class Imap {
         if($folder instanceof \Lib\Imap\Parse\Folder\Folder){
             $folder = $folder->folder;
         }else{
-            if(!$utf7) $folder = mb_convert_encoding($folder,"UTF7-IMAP","UTF-8");
+            if(!$utf7) $folder = mb_iconv($folder,"UTF7-IMAP","UTF-8");
         }
         return new Folder($this,$folder);
     }

@@ -53,7 +53,7 @@ class Folder{
      * @time 2024/9/20 10:00
      */
     public function getParseFolder(){
-        return mb_convert_encoding($this->folder, 'UTF-8', 'UTF7-IMAP');
+        return mb_iconv($this->folder, 'UTF-8', 'UTF7-IMAP');
     }
 
     /**

@@ -227,7 +227,7 @@ class Folder extends Request{
      */
     public function rename(string $newFolder, bool $is_utf7 = true):bool {
         // 需要转码
-        if(!$is_utf7) $newFolder  =   mb_convert_encoding($newFolder,'UTF7-IMAP','UTF-8');
+        if(!$is_utf7) $newFolder  =   mb_iconv($newFolder,'UTF7-IMAP','UTF-8');
 
 //        RENAME oldfolder newfolder
         $this->cmd('RENAME "%s" "%s"',$this->folder,$newFolder);

@@ -371,7 +371,7 @@ class Msg extends Request{
      * @time 2024/9/24 10:47
      */
     public function move(string $folder, bool $utf7 = true):bool {
-        if(!$utf7) $folder = mb_convert_encoding($folder,"UTF7-IMAP","UTF-8");
+        if(!$utf7) $folder = mb_iconv($folder,"UTF7-IMAP","UTF-8");
 //        "UID MOVE {$uids} \"{$folder}\""
         $this->cmd('%s MOVE %s "%s"',
             $this->isUid?'UID ':'',
@@ -391,7 +391,7 @@ class Msg extends Request{
      * @time 2024/9/24 10:51
      */
     public function copy(string $folder, bool $utf7 = true):bool {
-        if(!$utf7) $folder = mb_convert_encoding($folder,"UTF7-IMAP","UTF-8");
+        if(!$utf7) $folder = mb_iconv($folder,"UTF7-IMAP","UTF-8");
 //        "UID COPY {$uids} \"{$folder}\""
         $this->cmd('%s COPY %s "%s"',
             $this->isUid?'UID ':'',

@@ -447,7 +447,7 @@ class Imap {
                     // 源文件夹名称，在进行 select的时候必须用未解析的文件夹名称
                     'folder'    =>  trim(trim($m[3]),'"'),
                     // 解析过的文件夹名称
-                    'parseFolder'    =>  mb_convert_encoding(trim(trim($m[3]),'"'), 'UTF-8', 'UTF7-IMAP'),
+                    'parseFolder'    =>  mb_iconv(trim(trim($m[3]),'"'), 'UTF-8', 'UTF7-IMAP'),
                     // 是否可选择
                     'isSelect'  =>  strpos($m[1],'NoSelect')===false,
                     // 这里里面包含了公共的功能文件夹 比如 草稿，发送，有些邮箱没有
@@ -494,7 +494,7 @@ class Imap {
      */
     public function folderRename(string $oldFolder, string $newFolder){
         // 需要转码
-        $newFolder  =   mb_convert_encoding($newFolder,'UTF7-IMAP','UTF-8');
+        $newFolder  =   mb_iconv($newFolder,'UTF7-IMAP','UTF-8');
 //        RENAME oldfolder newfolder
         $res = $this->request("RENAME {$oldFolder} {$newFolder}");
 

@@ -326,7 +326,7 @@ class MailFun {
      * @time 2023/3/14 9:37
      */
     public static function folderEncoding($folder):string {
-        return mb_convert_encoding($folder,'UTF7-IMAP','UTF-8');
+        return mb_iconv($folder,'UTF7-IMAP','UTF-8');
     }
 
     /**
@@ -572,7 +572,7 @@ class Header
                 if (!$from) {
                     return mb_convert_encoding($str, $to);
                 }
-                return mb_convert_encoding($str, $to, $from);
+                return mb_iconv($str, $to, $from);
             }
         } catch (\Exception $e) {
             if (strstr($from, '-')) {