note 97949 added to function.uniqid

I wanted a way to return a unique number-based ID to be used (and revealed) on a website. <?php // generate a "unique" number to use as an ID function gen_id($length=16) { $arr = str_split(str_pad(hexdec(uniqid()), $length, str_replace(".", "", $_SERVER['REMOTE_ADDR']))); shuffle($arr); return substr(implode($arr), 0, $length); } ?> It's not perfect by any means, but it does the trick for the small number of IDs I've generated (~30,000) <?php echo gen_id(16); ?> Returns something like: 9222145031239296 ---- Server IP: 69.147.83.197 Probable Submitter: 118.90.133.171 ---- Manual Page -- http://www.php.net/manual/en/function.uniqid.php Edit -- https://master.php.net/note/edit/97949 Del: integrated -- https://master.php.net/note/delete/97949/integrated Del: useless -- https://master.php.net/note/delete/97949/useless Del: bad code -- https://master.php.net/note/delete/97949/bad+code Del: spam -- https://master.php.net/note/delete/97949/spam Del: non-english -- https://master.php.net/note/delete/97949/non-english Del: in docs -- https://master.php.net/note/delete/97949/in+docs Del: other reasons-- https://master.php.net/note/delete/97949 Reject -- https://master.php.net/note/reject/97949 Search -- https://master.php.net/manage/user-notes.php