Html 确定用户';s时区
web服务器是否有一种标准方法可以确定网页中用户的时区Html 确定用户';s时区,html,browser,timezone,user-agent,timezone-offset,Html,Browser,Timezone,User Agent,Timezone Offset,web服务器是否有一种标准方法可以确定网页中用户的时区 可能来自HTTP头或用户代理字符串的一部分?到目前为止,没有报告客户端时区的HTTP头,尽管建议将其包括在HTTP规范中 如果是我,我可能会尝试使用客户端JavaScript获取时区,然后使用Ajax或其他方式将其提交给服务器。JavaScript是获取客户端本地时间的最简单方法。我建议使用一个发送回本地时间,如果失败,则返回基于其IP地址检测到的时区 至于地理定位,我已经在几个项目中使用过,而且效果很好,尽管我不确定它们是否提供时区数据。
可能来自HTTP头或
用户代理
字符串的一部分?到目前为止,没有报告客户端时区的HTTP头,尽管建议将其包括在HTTP规范中
如果是我,我可能会尝试使用客户端JavaScript获取时区,然后使用Ajax或其他方式将其提交给服务器。JavaScript是获取客户端本地时间的最简单方法。我建议使用一个发送回本地时间,如果失败,则返回基于其IP地址检测到的时区 至于地理定位,我已经在几个项目中使用过,而且效果很好,尽管我不确定它们是否提供时区数据。这是一项你付费的服务,他们每月都会更新你的数据库。它们提供了几种网络语言的包装器。我所见过的确定时区的最流行(=标准?)方法就是简单地询问用户自己。如果您的网站需要订阅,可以将其保存在用户的配置文件数据中。对于anon用户,日期可以显示为UTC或GMT或类似的格式
我不是想成为一个聪明人。只是有时候有些问题在任何编程环境之外都有更好的解决方案。所有的魔力似乎都在其中
visitortime.getTimezoneOffset()
那很酷,我不知道。它在Internet Explorer等中工作吗?从那以后,您应该能够使用JavaScript到Ajax,设置cookies等等。我可能会自己去吃饼干
不过,您需要允许用户更改它。不久前,我们尝试使用地理定位(viamaxmind
)来实现这一点,但这是错误的,不值得这么做。因此,我们只需让用户在其配置文件中进行设置,并向尚未设置的用户显示一条通知。如果您碰巧使用进行身份验证,将解决已验证用户的问题(您需要将tz转换为数字)
另一种选择是根据用户代理的国家/地区偏好推断时区。这是一个有点粗糙的方法(对en-US不起作用),但它是一个很好的近似值
-new Date().getTimezoneOffset()/60;
方法getTimezoneOffset()
将从GMT中减去您的时间并返回分钟数。所以,如果你住在GMT-8,它将返回480
若要将其转换为小时数,请除以60。另外,请注意,该符号与您需要的符号相反-它计算的是GMT与您所在时区的偏移量,而不是您所在时区与GMT的偏移量。要解决此问题,只需将其乘以-1即可
还要注意的是:
由于使用
夏时制
下面是一篇文章(含源代码),解释如何在ASP.NET(VB.NET,C#)应用程序中确定和使用本地化时间:
简而言之,所描述的方法依赖于JavaScript
getTimezoneOffset
函数,该函数返回保存在会话cookie中的值,代码隐藏使用该值来调整GMT和本地时间之间的时间值。好在用户不需要指定时区(代码会自动指定)。其中涉及的内容更多(这就是我链接到本文的原因),但提供的代码使其真正易于使用。我怀疑您可以将逻辑转换为PHP和其他语言(只要您理解ASP.NET) 使用PHPdate
功能,您将获得站点所在服务器的日期和时间。获得用户时间的唯一方法是使用JavaScript
<?php
#http://www.php.net/manual/en/timezones.php List of Time Zones
function showclienttime()
{
if(!isset($_COOKIE['GMT_bias']))
{
?>
<script type="text/javascript">
var Cookies = {};
Cookies.create = function (name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else {
var expires = "";
}
document.cookie = name + "=" + value + expires + "; path=/";
this[name] = value;
}
var now = new Date();
Cookies.create("GMT_bias",now.getTimezoneOffset(),1);
window.location = "<?php echo $_SERVER['PHP_SELF'];?>";
</script>
<?php
}
else {
$fct_clientbias = $_COOKIE['GMT_bias'];
}
$fct_servertimedata = gettimeofday();
$fct_servertime = $fct_servertimedata['sec'];
$fct_serverbias = $fct_servertimedata['minuteswest'];
$fct_totalbias = $fct_serverbias – $fct_clientbias;
$fct_totalbias = $fct_totalbias * 60;
$fct_clienttimestamp = $fct_servertime + $fct_totalbias;
$fct_time = time();
$fct_year = strftime("%Y", $fct_clienttimestamp);
$fct_month = strftime("%B", $fct_clienttimestamp);
$fct_day = strftime("%d", $fct_clienttimestamp);
$fct_hour = strftime("%I", $fct_clienttimestamp);
$fct_minute = strftime("%M", $fct_clienttimestamp);
$fct_second = strftime("%S", $fct_clienttimestamp);
$fct_am_pm = strftime("%p", $fct_clienttimestamp);
echo $fct_day.", ".$fct_month." ".$fct_year." ( ".$fct_hour.":".$fct_minute.":".$fct_second." ".$fct_am_pm." )";
}
showclienttime();
?>
但是我建议你,如果你的网站需要注册,那么最好的方法就是在注册时要求用户注册。您可以在注册页面中列出各种时区,并将其保存在数据库中。在此之后,如果用户登录到站点,则可以根据用户选择的时区设置该会话的默认时区
您可以使用PHP函数date\u default\u timezone\u set
设置任何特定时区。这将为用户设置指定的时区
基本上,用户的时区是到客户端的,所以我们必须使用JavaScript来实现这一点
下面是使用PHP和JavaScript获取用户时区的脚本
<?php
#http://www.php.net/manual/en/timezones.php List of Time Zones
function showclienttime()
{
if(!isset($_COOKIE['GMT_bias']))
{
?>
<script type="text/javascript">
var Cookies = {};
Cookies.create = function (name, value, days) {
if (days) {
var date = new Date();
date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));
var expires = "; expires=" + date.toGMTString();
}
else {
var expires = "";
}
document.cookie = name + "=" + value + expires + "; path=/";
this[name] = value;
}
var now = new Date();
Cookies.create("GMT_bias",now.getTimezoneOffset(),1);
window.location = "<?php echo $_SERVER['PHP_SELF'];?>";
</script>
<?php
}
else {
$fct_clientbias = $_COOKIE['GMT_bias'];
}
$fct_servertimedata = gettimeofday();
$fct_servertime = $fct_servertimedata['sec'];
$fct_serverbias = $fct_servertimedata['minuteswest'];
$fct_totalbias = $fct_serverbias – $fct_clientbias;
$fct_totalbias = $fct_totalbias * 60;
$fct_clienttimestamp = $fct_servertime + $fct_totalbias;
$fct_time = time();
$fct_year = strftime("%Y", $fct_clienttimestamp);
$fct_month = strftime("%B", $fct_clienttimestamp);
$fct_day = strftime("%d", $fct_clienttimestamp);
$fct_hour = strftime("%I", $fct_clienttimestamp);
$fct_minute = strftime("%M", $fct_clienttimestamp);
$fct_second = strftime("%S", $fct_clienttimestamp);
$fct_am_pm = strftime("%p", $fct_clienttimestamp);
echo $fct_day.", ".$fct_month." ".$fct_year." ( ".$fct_hour.":".$fct_minute.":".$fct_second." ".$fct_am_pm." )";
}
showclienttime();
?>
var Cookies={};
Cookies.create=函数(名称、值、天数){
如果(天){
变量日期=新日期();
date.setTime(date.getTime()+(天*24*60*60*1000));
var expires=“;expires=“+date.togmString();
}
否则{
var=”;
}
document.cookie=name+“=”+value+expires+“path=/”;
此[名称]=值;
}
var now=新日期();
create(“GMT_bias”,now.getTimezoneOffset(),1);
window.location=“”;
但根据我的观点,最好询问用户在项目中是否强制注册。这里有一个更完整的方法
function TimezoneDetect(){
var dtDate = new Date('1/1/' + (new Date()).getUTCFullYear());
var intOffset = 10000; //set initial offset high so it is adjusted on the first attempt
var intMonth;
var intHoursUtc;
var intHours;
var intDaysMultiplyBy;
// Go through each month to find the lowest offset to account for DST
for (intMonth=0;intMonth < 12;intMonth++){
//go to the next month
dtDate.setUTCMonth(dtDate.getUTCMonth() + 1);
// To ignore daylight saving time look for the lowest offset.
// Since, during DST, the clock moves forward, it'll be a bigger number.
if (intOffset > (dtDate.getTimezoneOffset() * (-1))){
intOffset = (dtDate.getTimezoneOffset() * (-1));
}
}
return intOffset;
}
函数TimezoneDetect(){
var dtDate=new Date('1/1/'+(new Date()).getUTCFullYear());
var intOffset=10000;//将初始偏移设置为高,以便在第一次尝试时对其进行调整
每月的风险值;
var intHoursUtc;
var整数小时;
var intDaysMultiplyBy;
//检查每个月,找出DST的最低偏移量
对于(intMonth=0;intMonth<12;intMonth++){
//去下个月
dtDate.setUTCMonth(dtDate.getUTCMonth()+1);
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if("<?php echo $timezone; ?>".length==0){
var visitortime = new Date();
var visitortimezone = "GMT " + -visitortime.getTimezoneOffset()/60;
$.ajax({
type: "GET",
url: "http://example.org/timezone.php",
data: 'time='+ visitortimezone,
success: function(){
location.reload();
}
});
}
});
</script>
<?php
session_start();
$_SESSION['time'] = $_GET['time'];
?>
function maketimus(timestampz)
{
var linktime = new Date(timestampz * 1000);
var linkday = linktime.getDate();
var freakingmonths = new Array();
freakingmonths[0] = "jan";
freakingmonths[1] = "feb";
freakingmonths[2] = "mar";
freakingmonths[3] = "apr";
freakingmonths[4] = "may";
freakingmonths[5] = "jun";
freakingmonths[6] = "jul";
freakingmonths[7] = "aug";
freakingmonths[8] = "sep";
freakingmonths[9] = "oct";
freakingmonths[10] = "nov";
freakingmonths[11] = "dec";
var linkmonthnum = linktime.getMonth();
var linkmonth = freakingmonths[linkmonthnum];
var linkyear = linktime.getFullYear();
var linkhour = linktime.getHours();
var linkminute = linktime.getMinutes();
if (linkminute < 10)
{
linkminute = "0" + linkminute;
}
var fomratedtime = linkday + linkmonth + linkyear + " " +
linkhour + ":" + linkminute + "h";
return fomratedtime;
}
echo '<script type="text/javascript">
var eltimio = maketimus('.$unix_timestamp_ofshiz.');
document.write(eltimio);
</script><noscript>pls enable javascript</noscript>';
new Date().getTimezoneOffset();
<?php
session_start();
if(!isset($_SESSION['timezone']))
{
if(!isset($_REQUEST['offset']))
{
?>
<script>
var d = new Date()
var offset= -d.getTimezoneOffset()/60;
location.href = "<?php echo $_SERVER['PHP_SELF']; ?>?offset="+offset;
</script>
<?php
}
else
{
$zonelist = array('Kwajalein' => -12.00, 'Pacific/Midway' => -11.00, 'Pacific/Honolulu' => -10.00, 'America/Anchorage' => -9.00, 'America/Los_Angeles' => -8.00, 'America/Denver' => -7.00, 'America/Tegucigalpa' => -6.00, 'America/New_York' => -5.00, 'America/Caracas' => -4.30, 'America/Halifax' => -4.00, 'America/St_Johns' => -3.30, 'America/Argentina/Buenos_Aires' => -3.00, 'America/Sao_Paulo' => -3.00, 'Atlantic/South_Georgia' => -2.00, 'Atlantic/Azores' => -1.00, 'Europe/Dublin' => 0, 'Europe/Belgrade' => 1.00, 'Europe/Minsk' => 2.00, 'Asia/Kuwait' => 3.00, 'Asia/Tehran' => 3.30, 'Asia/Muscat' => 4.00, 'Asia/Yekaterinburg' => 5.00, 'Asia/Kolkata' => 5.30, 'Asia/Katmandu' => 5.45, 'Asia/Dhaka' => 6.00, 'Asia/Rangoon' => 6.30, 'Asia/Krasnoyarsk' => 7.00, 'Asia/Brunei' => 8.00, 'Asia/Seoul' => 9.00, 'Australia/Darwin' => 9.30, 'Australia/Canberra' => 10.00, 'Asia/Magadan' => 11.00, 'Pacific/Fiji' => 12.00, 'Pacific/Tongatapu' => 13.00);
$index = array_keys($zonelist, $_REQUEST['offset']);
$_SESSION['timezone'] = $index[0];
}
}
date_default_timezone_set($_SESSION['timezone']);
//rest of your code goes here
?>
-new Date().getTimezoneOffset()/60;
<?php
$ip = $_SERVER['REMOTE_ADDR'];
$json = file_get_contents("http://api.easyjquery.com/ips/?ip=" . $ip . "&full=true");
$json = json_decode($json,true);
$timezone = $json['LocalTimeZone'];
?>
>>> var timezone = jstz.determine();
>>> timezone.name();
"Europe/London"
>> new Date().toTimeString();
"15:46:04 GMT+1200 (New Zealand Standard Time)"
//Use some regular expression to extract the time.
$.ajaxSetup({
beforeSend: function(xhr, settings) {
xhr.setRequestHeader("X-TZ-Offset", -new Date().getTimezoneOffset()/60);
}
});
var off = (-new Date().getTimezoneOffset()/60).toString();//note the '-' in front which makes it return positive for negative offsets and negative for positive offsets
var tzo = off == '0' ? 'GMT' : off.indexOf('-') > -1 ? 'GMT'+off : 'GMT+'+off;
$ts = new DateTime('now', new DateTimeZone($_POST['tzo']);
$user_time = $ts->format("F j, Y, g:i a");//will return the users current time in readable format, regardless of whether date_default_timezone() is set or not.
$user_timestamp = strtotime($user_time);
$date_created = // Get from the database
$created = date("F j, Y, g:i a",$date_created); // Return it to the user or whatever
> moment.tz.guess()
"America/Asuncion"
var timezone_offset_minutes = new Date().getTimezoneOffset();
timezone_offset_minutes = timezone_offset_minutes == 0 ? 0 : -timezone_offset_minutes;
// Just an example.
$timezone_offset_minutes = -360; // $_GET['timezone_offset_minutes']
// Convert minutes to seconds
$timezone_name = timezone_name_from_abbr("", $timezone_offset_minutes*60, false);
// America/Chicago
echo $timezone_name;</code></pre>