Mst time zone in php

Hi,

I'm trying to compute current time for mountain standard time with
daylight savings (MDT);and without DST (MST), eg: Phoenix, AZ.

If I use the PHP timezone "US/Mountain", it returns MDT correctly.
What is the PHP time zone for MST?

Similarly, are there PHP time zones for Pacific, Central and Eastern
time zones without Daylight Savings? The PHP time zones US/Pacific, US/
Central and US/Eastern all show time with Daylight Savings.

Jul 3 '07 #1

On Jul 3, 6:48 am, wrote:

Hi,

I'm trying to compute current time for mountain standard time with
daylight savings (MDT);and without DST (MST), eg: Phoenix, AZ.

If I use the PHP timezone "US/Mountain", it returns MDT correctly.
What is the PHP time zone for MST?

Similarly, are there PHP time zones for Pacific, Central and Eastern
time zones without Daylight Savings? The PHP time zones US/Pacific, US/
Central and US/Eastern all show time with Daylight Savings.

There is a complete list of timezones supported by PHP in the PHP
manual.

<http://www.php.net/manual/en/timezones.php>

Jul 3 '07 #2

This discussion thread is closed

Replies have been disabled for this discussion.

Is there just a list of time zones for the united states I can use with php? Im using the timezone names from php such as America/Anchorage, php lists time zones here:

http://us.php.net/manual/en/timezones.others.php

I want to display them in a drop down for the user to select but I only need the ones for the US, I dont want to show a bunch that are outside the US.

asked Feb 14, 2011 at 5:48

6

Here is a list I found:

Eastern Time    America/New_York
Central Time    America/Chicago
Mountain Time   America/Denver
Mountain Time (no DST) America/Phoenix
Pacific Time    America/Los_Angeles
Alaska Time America/Anchorage
Hawaii-Aleutian America/Adak
Hawaii-Aleutian Time (no DST) Pacific/Honolulu

answered Feb 14, 2011 at 6:01

JohnJohn

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6

As deceze said, you can use the PER_COUNTRY flag.

$timezone_identifiers = DateTimeZone::listIdentifiers(DateTimeZone::PER_COUNTRY, 'US');
foreach($timezone_identifiers as $timezone_identifier) {
  echo "$timezone_identifier\n";
}

Output:

America/Adak
America/Anchorage
America/Boise
America/Chicago
America/Denver
America/Detroit
America/Indiana/Indianapolis
America/Indiana/Knox
America/Indiana/Marengo
America/Indiana/Petersburg
America/Indiana/Tell_City
America/Indiana/Vevay
America/Indiana/Vincennes
America/Indiana/Winamac
America/Juneau
America/Kentucky/Louisville
America/Kentucky/Monticello
America/Los_Angeles
America/Menominee
America/Metlakatla
America/New_York
America/Nome
America/North_Dakota/Beulah
America/North_Dakota/Center
America/North_Dakota/New_Salem
America/Phoenix
America/Shiprock
America/Sitka
America/Yakutat
Pacific/Honolulu

answered Sep 10, 2012 at 20:31

jgrowljgrowl

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1

This will automatically get you a list of American timezones:

if (defined('DateTimeZone::AMERICA')) {
    // PHP 5.3+
    $timezoneIdentifiers = timezone_identifiers_list(DateTimeZone::AMERICA);
} else {
    // PHP 5.2
    $timezoneIdentifiers = timezone_identifiers_list();
    $timezoneIdentifiers = array_filter($timezoneIdentifiers, create_function('$tz', 'return preg_match("/^America\//", $tz);'));
}

Note that this will include South American, Canadian etc timezones as well though. You could play around with DateTimeZone::PER_COUNTRY as a filter to timezone_identifiers_list for PHP 5.3 and see if that gets you want you want, or filter the complete list for US/. The best choice is probably to handpick the timezones though.

answered Feb 14, 2011 at 5:55

deceze♦deceze

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1

Brute-force way to get ALL timezones per country using PHP's GEOIP. The code is not intended to look nice. You should call this only once and store the result somewhere.

$timezones = array();

foreach (range('A', 'Z') as $i) {
    foreach (range('A', 'Z') as $j) {
        $country = $i . $j;

        foreach (range('A', 'Z') as $k) {
            foreach (range('A', 'Z') as $l) {
                $region = $k . $l;

                if ($timezone = geoip_time_zone_by_country_and_region($country, $region)) {
                    $timezones[$country][$timezone] = true;
                }
            }
        }

        foreach (range(0, 99) as $m) {
            if ($timezone = geoip_time_zone_by_country_and_region($country, sprintf('%02d', $m))) {
                $timezones[$country][$timezone] = true;
            }
        }
    }
}

var_dump($timezones);

answered Feb 13, 2014 at 8:50

maryomaryo

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