trouble with gmdate(), offset doesnt work

[motormichael12]

using the code

<?php
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-12));    echo " - (GMT - 12:00 hours) Enitwetok, Kwajalien";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-11));    echo " - (GMT - 11:00 hours) Midway Island, Samoa";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-10));    echo " - (GMT - 10:00 hours) Hawaii";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-9));    echo " - (GMT - 9:00 hours) Alaska";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-8));    echo " - (GMT - 8:00 hours) Pacific Time (US &amp; Canada)";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-7));    echo " - (GMT - 7:00 hours) Mountain Time (US &amp; Canada)";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-6));    echo " - (GMT - 6:00 hours) Central Time (US &amp; Canada), Mexico City";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-5));    echo " - (GMT - 5:00 hours) Eastern Time (US &amp; Canada), Bogota, Lima, Quito";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-4));    echo " - (GMT - 4:00 hours) Atlantic Time (Canada), Caracas, La Paz";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-3));    echo " - (GMT - 3:00 hours) Brazil, Buenos Aires, Georgetown, Falkland Is.";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-2));    echo " - (GMT - 2:00 hours) Mid-Atlantic, Ascention Is., St Helena";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(-1));    echo " - (GMT - 1:00 hours) Azores, Cape Verde Islands";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(0));    echo " - (GMT) Casablanca, Dublin, Edinburgh, London, Lisbon, Monrovia";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(1));    echo " - (GMT + 1:00 hours) Berlin, Brussels, Copenhagen, Madrid, Paris, Rome";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(2));    echo " - (GMT + 2:00 hours) Kaliningrad, South Africa, Warsaw";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(3));    echo " - (GMT + 3:00 hours) Baghdad, Riyadh, Moscow, Nairobi";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(4));    echo " - (GMT + 4:00 hours) Abu Dhabi, Baku, Muscat, Tbilisi";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(5));    echo " - (GMT + 5:00 hours) Ekaterinburg, Islamabad, Karachi, Tashkent";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(6));    echo " - (GMT + 6:00 hours) Almaty, Colomba, Dhakra";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(7));    echo " - (GMT + 7:00 hours) Bangkok, Hanoi, Jakarta";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(8));    echo " - (GMT + 8:00 hours) Beijing, Hong Kong, Perth, Singapore, Taipei";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(9));    echo " - (GMT + 9:00 hours) Osaka, Sapporo, Seoul, Tokyo, Yakutsk";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(10));    echo " - (GMT + 10:00 hours) Melbourne, Papua New Guinea, Sydney, Vladivostok";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(11));    echo " - (GMT + 11:00 hours) Magadan, New Caledonia, Solomon Islands";    echo "<BR>";
echo gmdate("l, F jS, Y \- h:i:s A", mktime(12));    echo " - (GMT + 12:00 hours) Auckland, Wellington, Fiji, Marshall Island";    echo "<BR>";
?>

it appears as

Thursday, December 7th, 2006 - 05:11:12 PM - (GMT - 12:00 hours) Enitwetok, Kwajalien
Thursday, December 7th, 2006 - 06:11:12 PM - (GMT - 11:00 hours) Midway Island, Samoa
Thursday, December 7th, 2006 - 07:11:12 PM - (GMT - 10:00 hours) Hawaii
Thursday, December 7th, 2006 - 08:11:12 PM - (GMT - 9:00 hours) Alaska
Thursday, December 7th, 2006 - 09:11:12 PM - (GMT - 8:00 hours) Pacific Time (US & Canada)
Thursday, December 7th, 2006 - 10:11:12 PM - (GMT - 7:00 hours) Mountain Time (US & Canada)
Thursday, December 7th, 2006 - 11:11:12 PM - (GMT - 6:00 hours) Central Time (US & Canada), Mexico City
Friday, December 8th, 2006 - 12:11:12 AM - (GMT - 5:00 hours) Eastern Time (US & Canada), Bogota, Lima, Quito
Friday, December 8th, 2006 - 01:11:12 AM - (GMT - 4:00 hours) Atlantic Time (Canada), Caracas, La Paz
Friday, December 8th, 2006 - 02:11:12 AM - (GMT - 3:00 hours) Brazil, Buenos Aires, Georgetown, Falkland Is.
Friday, December 8th, 2006 - 03:11:12 AM - (GMT - 2:00 hours) Mid-Atlantic, Ascention Is., St Helena
Friday, December 8th, 2006 - 04:11:12 AM - (GMT - 1:00 hours) Azores, Cape Verde Islands
Friday, December 8th, 2006 - 05:11:12 AM - (GMT) Casablanca, Dublin, Edinburgh, London, Lisbon, Monrovia
Friday, December 8th, 2006 - 06:11:12 AM - (GMT + 1:00 hours) Berlin, Brussels, Copenhagen, Madrid, Paris, Rome
Friday, December 8th, 2006 - 07:11:12 AM - (GMT + 2:00 hours) Kaliningrad, South Africa, Warsaw
Friday, December 8th, 2006 - 08:11:12 AM - (GMT + 3:00 hours) Baghdad, Riyadh, Moscow, Nairobi
Friday, December 8th, 2006 - 09:11:12 AM - (GMT + 4:00 hours) Abu Dhabi, Baku, Muscat, Tbilisi
Friday, December 8th, 2006 - 10:11:12 AM - (GMT + 5:00 hours) Ekaterinburg, Islamabad, Karachi, Tashkent
Friday, December 8th, 2006 - 11:11:12 AM - (GMT + 6:00 hours) Almaty, Colomba, Dhakra
Friday, December 8th, 2006 - 12:11:12 PM - (GMT + 7:00 hours) Bangkok, Hanoi, Jakarta
Friday, December 8th, 2006 - 01:11:12 PM - (GMT + 8:00 hours) Beijing, Hong Kong, Perth, Singapore, Taipei
Friday, December 8th, 2006 - 02:11:12 PM - (GMT + 9:00 hours) Osaka, Sapporo, Seoul, Tokyo, Yakutsk
Friday, December 8th, 2006 - 03:11:12 PM - (GMT + 10:00 hours) Melbourne, Papua New Guinea, Sydney, Vladivostok
Friday, December 8th, 2006 - 04:11:12 PM - (GMT + 11:00 hours) Magadan, New Caledonia, Solomon Islands
Friday, December 8th, 2006 - 05:11:12 PM - (GMT + 12:00 hours) Auckland, Wellington, Fiji, Marshall Island

i think it auto conforms to your timezone on your pc when using gmdate but im not sure, I want a user to be able to select the choice but I gotta get it working first... can someone tell me by going to http://michael.hungerford.us/gmttimes.php and telling me what the time for (gmt) area is for you so i can check if it auto detects from your pc location?

on my pc my current time is (GMT + 01:00) so its just being wierd, im not sure why

[thetestingsite]

what any of the date/time functions in php do is use the server time that the webpage is on. IE, if your server is your home computer, and the current time is 5:30pm on 12/8/06, then that will be the date PHP uses. There are a way around this, but you will need to have safe mode off to do it. I cannot remember exactly what it is but you could probably find it in the comments on the PHP.net website.

[motormichael12]

my error seems to be in the mktime, i erased it so it is

echo gmdate("l, F jS, Y \- h:i:s A");    echo " - (GMT) Casablanca, Dublin, Edinburgh, London, Lisbon, Monrovia";    echo "<BR>"; 

and it appears ot display the correct time now...

[motormichael12]

gmdate shouldnt use server though since it uses gmt time conversion

[thetestingsite]

Yea, you're right, it uses the gmt conversion from the server time. I misunderstood the original post, and simply glanced over the posted code. Sorry for the mishap.

[Twey]

Uh... what's wrong with that? It looks perfectly correct to me.

The other posters here are right: PHP is run on the server, not the client, so it uses the server's time.

[motormichael12]

gmdate should set it equivalent to gmt time though... I will use separate date and do like

$time = gmdate("h") + (value of something else...)
echo gmdate("l, F jS, Y \- "
echo $time;
echo ":i:s A";