note 46769 added to function.time

From: Date: Fri, 22 Oct 2004 15:44:26 +0000
Subject: note 46769 added to function.time
Groups: php.notes 
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IMPORTANT! The PHP function <? time() ?> returns the number of SECONDS since the Epoch (1st Jan 1970). The JAVASCRIPT function: Date()* returns the number of MILLISECONDS since the Epoch. *code litterally Number(new Date()) as new Date() returns a string. In order to have a dynamic server time through javascript, rather than the dynamic time of the client computer, use the code: <html> <head> <title>Clock</title> <script> serverUNIXtime=<?= time()*1000 ?>; usertime = new Date(); useroffset = serverUNIXtime - usertime; function showtime(){ d=new Date(Number(new Date())+useroffset); document.forms['timeupdate'].elements['timer'].value=d; window.status=useroffset; } </script> </head> <body onload="setInterval('showtime()',250)"> <!-- Your code here --> <form name="timeupdate"> <input name="timer" style="background-color:transparent;border:0px"/> </form> <!-- Your code here --> </body> </html> PS. The code for useroffsetted time is also useful for trying to do more clever ways of identifying "hackers" to your webpages, since many use a proxy, but few change their actual system time to compensate for where their proxy is based. ---- Manual Page -- http://www.php.net/manual/en/function.time.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+46769 Delete -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes Reason: bad code -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes&reason=bad+code Reason: spam -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes&reason=spam Reason: useless example -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes&reason=useless+example Reason: contains commercial links -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes&reason=contains+commercial+links Reason: useless note -- http://master.php.net/manage/user-notes.php?action=delete+46769&report=yes&reason=useless+note Reject -- http://master.php.net/manage/user-notes.php?action=reject+46769&report=yes Search -- http://master.php.net/manage/user-notes.php

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