function dir_list($dirname) 
{ 
 if($dirname[strlen($dirname)-1]!='/') 
 $dirname.='/'; 
 $handle=opendir($dirname); 
 while ($file = readdir($handle)) 
  { 
   if($file=='.'||$file=='..') continue;
   $result_array[]=$dirname.$file; 
   } 
 closedir($handle); 
 return $result_array; 
};

executed for a directory which has subdirectory that has a digit/special character as a first character of it's name,
then that subdirectory won't be included in the $result_array