note 86504 deleted from function.date by derick
| From: | derick@php.net | Date: | Sun, 22 Mar 2009 18:46:20 +0000 |
| Subject: | note 86504 deleted from function.date by derick | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-152303@lists.php.net to get a copy of this message | ||
Note Submitter: kyle renfrow
----
i figured i would post this, it's only useful for systems dealing with UTC and EST, but could
easily be modified to support multiple timezones. this function will tell you whether it's
daylight saving time for the eastern timezone using UTC localtime:
<?php
//checks whether DST in EST using UTC
//can pass $time in unix timestamp, otherwise uses time()
function est_isdst($time=NULL){
if(!$time) { $now = time(); }else { $now = $time; }
if (
$now > strtotime(date('Y-m-d 6:59:59', strtotime('next Sunday',
strtotime(date('Y', $now).'-3-7')))) &&
$now < strtotime(date('Y-m-d 6:00', strtotime('first Sunday',
strtotime(date('Y', $now).'-11-0'))))
) { return true; }else { return false; }
}
?>
USAGE:
<?php
if(est_isdst()) { echo 'Its DST in EST Timezone!'; }
?>