note 57444 added to function.microtime

From: Date: Tue, 04 Oct 2005 14:51:26 +0000
Subject: note 57444 added to function.microtime
Groups: php.notes 
Request: Send a blank email to php-notes+get-96351@lists.php.net to get a copy of this message
Contrary to what "cristianDOTzuddas-NOSPAM-com" states below, do NOT use his function to create unique IDs. Use a real unique function such as uniqid(). See the examples on that http://php.net/uniqid and the user comments for ensuring that you indeed do have a unique ID. (Why is his example bad? It will produce the same unique identifier if the code runs twice at the same time. Technically the statements could only execute simultaneously on a system with 2 or more processors but compounding rounding and floating point errors will make a collision more likely.) ---- Manual Page -- http://www.php.net/manual/en/function.microtime.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57444 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57444&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57444&report=yes Search -- http://master.php.net/manage/user-notes.php

« previous php.notes (#96351) next »