note 102014 added to function.is-dir

@jasoneisen technique of using scandir will add lots of overhead if the directory is large. I think the method of opening the directory and stopping as soon as you find a single file (not . or .. ) is much more efficient. ---- Server IP: 69.147.83.197 Probable Submitter: 71.183.37.78 ---- Manual Page -- http://www.php.net/manual/en/function.is-dir.php Edit -- https://master.php.net/note/edit/102014 Del: integrated -- https://master.php.net/note/delete/102014/integrated Del: useless -- https://master.php.net/note/delete/102014/useless Del: bad code -- https://master.php.net/note/delete/102014/bad+code Del: spam -- https://master.php.net/note/delete/102014/spam Del: non-english -- https://master.php.net/note/delete/102014/non-english Del: in docs -- https://master.php.net/note/delete/102014/in+docs Del: other reasons-- https://master.php.net/note/delete/102014 Reject -- https://master.php.net/note/reject/102014 Search -- https://master.php.net/manage/user-notes.php