note 101987 added to function.hash

This is a small function I created to generate a unique ID using sha512 encryption. If $id is NULL, the generated string will be random. If not, the same hash will always be presented, provided the $salt is the same. $length is the length of the generated string. If NULL, the default 128 characters is used. <?php function gen_unique_id($id = NULL, $salt = NULL, $length = NULL){ $id = ($id == NULL) ? uniqid(hash("sha512",rand()), TRUE) : $id; $code = hash("sha512", $id.$salt); return $length == NULL ? $code : substr($code, 0, $length); } ?> ---- Server IP: 192.41.42.26 Probable Submitter: 63.125.105.130 ---- Manual Page -- http://www.php.net/manual/en/function.hash.php Edit -- https://master.php.net/note/edit/101987 Del: integrated -- https://master.php.net/note/delete/101987/integrated Del: useless -- https://master.php.net/note/delete/101987/useless Del: bad code -- https://master.php.net/note/delete/101987/bad+code Del: spam -- https://master.php.net/note/delete/101987/spam Del: non-english -- https://master.php.net/note/delete/101987/non-english Del: in docs -- https://master.php.net/note/delete/101987/in+docs Del: other reasons-- https://master.php.net/note/delete/101987 Reject -- https://master.php.net/note/reject/101987 Search -- https://master.php.net/manage/user-notes.php