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wilmoore/user_tz_to_utc.php

Created April 5, 2012 16:48
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Playing with DateTime and DateTimeZone
Raw
user_tz_to_utc.php
<?php
// assume these preferences came from a database as-is
$userTimezonePreference = 'America/Denver';
$userStoredDateTime = '2012-04-02 00:15:40';
$dateTime = new DateTime($userStoredDateTime, new DateTimeZone($userTimezonePreference));
echo 'ORIG: ', $dateTime->format(DateTime::RFC2822), PHP_EOL;
$dateTime->setTimezone(new DateTimeZone('UTC'));
echo 'USER: ', $dateTime->format(DateTime::RFC2822), PHP_EOL;
Raw
utc_to_user_tz.php
<?php
// assume these preferences came from a database as-is
$userTimezonePreference = 'America/Denver';
$storedDateTimeAsUtc = '2012-04-02 06:15:40';
$dateTime = new DateTime($storedDateTimeAsUtc, new DateTimeZone('UTC'));
echo 'ORIG: ', $dateTime->format(DateTime::RFC2822), PHP_EOL;
$dateTime->setTimezone(new DateTimeZone($userTimezonePreference));
echo 'USER: ', $dateTime->format(DateTime::RFC2822), PHP_EOL;
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