note 97025 deleted from function.strtotime by derick
| From: | derick@php.net | Date: | Sun, 14 Dec 2014 11:41:03 +0000 |
| Subject: | note 97025 deleted from function.strtotime by derick | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-201177@lists.php.net to get a copy of this message | ||
Note Submitter: clarkDONTSPAMMEwise at gmail dot com
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Always use the format strtotime("+1 day") when adding/subtracting units of time rather
than manually adding 24*60*60 seconds to a timestamp, for example, as this format works as desired
with Daylight Saving Time changes. If your timezone adheres to Daylight Saving Time, a situation
like the following may apply to you:
<?php
date_default_timezone_set('America/Chicago');
// Don't do this:
$today = '2009-11-01';
$tomorrow = strtotime($today) + 24*3600;
print date('Y-m-d', $tomorrow);
// Output: 2009-11-01
// Do this instead:
$today = '2009-11-01';
$tomorrow = strtotime('+1 day', strtotime($today));
print date('Y-m-d', $tomorrow);
// Output: 2009-11-02