note 38218 added to function.microtime

I'm looking for a code that generates an unique number every time it is used, I was hoping that that would be possible with microtime, but I don't understand a thing here. Could someone help? You can also mail me @ php at digx dot nl ---- Manual Page -- http://www.php.net/manual/en/function.microtime.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+38218 Delete -- http://master.php.net/manage/user-notes.php?action=delete+38218&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+38218&report=yes Search -- http://master.php.net/manage/user-notes.php