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  1. #1
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    Date/Time and Local TimeZone from Browser headers. ?

    I have a need to give the view on the date/time to the user (web surfer) on a website, but the time needs to be set to the users local timezone. I am aware this is given via the browser headers. I DO NOT want to use the time the users 'local system'. I will grab their timezone from the headers and use that against utc/greenwich.

    Does someone have a working example of this somewhere? I can't seem to locate one. Alot of people talk about it, but I have yet to see a reliable and complete script.

    please advise.

  • #2
    Senior Coder CFMaBiSmAd's Avatar
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    The problem is that the browser does NOT send the client time/time zone in the headers. You would need to write or find a javascript script to do this.

    You can take the "screen resolution" example in the php manual and modify it to send the client time/time zone or any other information available in the browser - http://www.php.net/manual/en/faq.htm...cript-variable
    If you are learning PHP, developing PHP code, or debugging PHP code, do yourself a favor and check your web server log for errors and/or turn on full PHP error reporting in php.ini or in a .htaccess file to get PHP to help you.

  • #3
    Senior Coder CFMaBiSmAd's Avatar
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    Here is a script that does this (tested with various time zones, including some of the 1/2 hour and 3/4 hour ones) -

    PHP Code:
    <?php
    if (isset($_GET['offset'])) {
        
    $minutes $_GET['offset'];
        echo 
    "GMT offset (in minutes, from the browser): "$minutes ."<br />\n";
        echo 
    "GMT: "gmdate("Y-m-d H:i:s") ."<br />\n";
        
        
    $local gmmktime(gmdate("H"),gmdate("i")-$minutes); // adjust GMT by client's offset
        
        
    echo "Calculated client's date/time: "gmdate("Y-m-d h:i:s a",$local) ."<br />\n";
    } else {
        echo 
    "<script language='javascript'>\n";
        echo 
    "var d = new Date();\n";
        echo 
    "location.href=\"${_SERVER['SCRIPT_NAME']}?offset=\" + d.getTimezoneOffset();\n";
        echo 
    "</script>\n";
        exit();
    }
    ?>
    If you are learning PHP, developing PHP code, or debugging PHP code, do yourself a favor and check your web server log for errors and/or turn on full PHP error reporting in php.ini or in a .htaccess file to get PHP to help you.

  • #4
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    This has to be done 100% client side. I can't use any server side interference.

    This is what i have: My issue is integration with "existing" date scripts:

    function getTimezoneName() {
    tmSummer = new Date(Date.UTC(2005, 6, 30, 0, 0, 0, 0));
    so = -1 * tmSummer.getTimezoneOffset();
    tmWinter = new Date(Date.UTC(2005, 12, 30, 0, 0, 0, 0));
    wo = -1 * tmWinter.getTimezoneOffset();

    if (-660 == so && -660 == wo) return 'Pacific/Midway';
    if (-600 == so && -600 == wo) return 'Pacific/Tahiti';
    if (-570 == so && -570 == wo) return 'Pacific/Marquesas';
    if (-540 == so && -600 == wo) return 'America/Adak';
    if (-540 == so && -540 == wo) return 'Pacific/Gambier';
    if (-480 == so && -540 == wo) return 'US/Alaska';
    if (-480 == so && -480 == wo) return 'Pacific/Pitcairn';
    if (-420 == so && -480 == wo) return 'US/Pacific';
    if (-420 == so && -420 == wo) return 'US/Arizona';
    if (-360 == so && -420 == wo) return 'US/Mountain';
    if (-360 == so && -360 == wo) return 'America/Guatemala';
    if (-360 == so && -300 == wo) return 'Pacific/Easter';
    if (-300 == so && -360 == wo) return 'US/Central';
    if (-300 == so && -300 == wo) return 'America/Bogota';
    if (-240 == so && -300 == wo) return 'US/Eastern';
    if (-240 == so && -240 == wo) return 'America/Caracas';
    if (-240 == so && -180 == wo) return 'America/Santiago';
    if (-180 == so && -240 == wo) return 'Canada/Atlantic';
    if (-180 == so && -180 == wo) return 'America/Montevideo';
    if (-180 == so && -120 == wo) return 'America/Sao_Paulo';
    if (-150 == so && -210 == wo) return 'America/St_Johns';
    if (-120 == so && -180 == wo) return 'America/Godthab';
    if (-120 == so && -120 == wo) return 'America/Noronha';
    if (-60 == so && -60 == wo) return 'Atlantic/Cape_Verde';
    if (0 == so && -60 == wo) return 'Atlantic/Azores';
    if (0 == so && 0 == wo) return 'Africa/Casablanca';
    if (60 == so && 0 == wo) return 'Europe/London';
    if (60 == so && 60 == wo) return 'Africa/Algiers';
    if (60 == so && 120 == wo) return 'Africa/Windhoek';
    if (120 == so && 60 == wo) return 'Europe/Amsterdam';
    if (120 == so && 120 == wo) return 'Africa/Harare';
    if (180 == so && 120 == wo) return 'Europe/Athens';
    if (180 == so && 180 == wo) return 'Africa/Nairobi';
    if (240 == so && 180 == wo) return 'Europe/Moscow';
    if (240 == so && 240 == wo) return 'Asia/Dubai';
    if (270 == so && 210 == wo) return 'Asia/Tehran';
    if (270 == so && 270 == wo) return 'Asia/Kabul';
    if (300 == so && 240 == wo) return 'Asia/Baku';
    if (300 == so && 300 == wo) return 'Asia/Karachi';
    if (330 == so && 330 == wo) return 'Asia/Calcutta';
    if (345 == so && 345 == wo) return 'Asia/Katmandu';
    if (360 == so && 300 == wo) return 'Asia/Yekaterinburg';
    if (360 == so && 360 == wo) return 'Asia/Colombo';
    if (390 == so && 390 == wo) return 'Asia/Rangoon';
    if (420 == so && 360 == wo) return 'Asia/Almaty';
    if (420 == so && 420 == wo) return 'Asia/Bangkok';
    if (480 == so && 420 == wo) return 'Asia/Krasnoyarsk';
    if (480 == so && 480 == wo) return 'Australia/Perth';
    if (540 == so && 480 == wo) return 'Asia/Irkutsk';
    if (540 == so && 540 == wo) return 'Asia/Tokyo';
    if (570 == so && 570 == wo) return 'Australia/Darwin';
    if (570 == so && 630 == wo) return 'Australia/Adelaide';
    if (600 == so && 540 == wo) return 'Asia/Yakutsk';
    if (600 == so && 600 == wo) return 'Australia/Brisbane';
    if (600 == so && 660 == wo) return 'Australia/Sydney';
    if (630 == so && 660 == wo) return 'Australia/Lord_Howe';
    if (660 == so && 600 == wo) return 'Asia/Vladivostok';
    if (660 == so && 660 == wo) return 'Pacific/Guadalcanal';
    if (690 == so && 690 == wo) return 'Pacific/Norfolk';
    if (720 == so && 660 == wo) return 'Asia/Magadan';
    if (720 == so && 720 == wo) return 'Pacific/Fiji';
    if (720 == so && 780 == wo) return 'Pacific/Auckland';
    if (765 == so && 825 == wo) return 'Pacific/Chatham';
    if (780 == so && 780 == wo) return 'Pacific/Enderbury'
    if (840 == so && 840 == wo) return 'Pacific/Kiritimati';
    return 'US/Pacific';
    }

    var tz = getTimezoneName();

  • #5
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    bumping for solution :-)


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