Home  >  Article  >  Backend Development  >  javascript+php实现根据用户时区显示当地时间的方法_PHP

javascript+php实现根据用户时区显示当地时间的方法_PHP

WBOY
WBOYOriginal
2016-05-31 13:13:24759browse

本文实例讲述了javascript+php实现根据用户时区显示当地时间的方法。分享给大家供大家参考。具体如下:

在跨时区应用中会用到下面代码,这是以前写的一段代码。

服务器保存相关时间配置,保存形式为GMT时间,客户端需要根据客户所在时区做相应显示,以符合客户习惯。

1. JavaScript代码如下:

window.onload = function() {
//TODO begin 处理登陆用户时区
    //获得登陆用户时区与GMT时区的差值
    var exp = new Date();
    var gmtHours = -(exp.getTimezoneOffset()/60);
    setCookie('customer_timezone',gmtHours,1);
    //判断是否为夏令时
    date = exp.format('yyyy-MM-dd HH:mm:ss');
    if(inDaylightTime(date)){
      setCookie('inDaylightTime',1,1);
    }
}
//设置Cookie
function setCookie(c_name,value,expiredays){
    var exdate=new Date()
    exdate.setDate(exdate.getDate()+expiredays)
    document.cookie=c_name+ "=" +escape(value)+
    ((expiredays==null) ? "" : "; expires="+exdate.toGMTString())
}
//判断时间是东半球还是西半球
function isEastEarthTime(newDate)
{
  var dj= newDate.getGMTOffset(false);
  if (dj.indexOf("-") == -1){
    return true;
  } else {
    return false;
  }
}
//是否是夏令时
function inDaylightTime(date){
 var start = new Date(date.getTime());
 start.setMonth(0);
 start.setDate(1);
 start.setHours(0);
 start.setMinutes(0);
 start.setSeconds(0);
 var middle = new Date(start.getTime());
 middle.setMonth(6);
 // 如果年始和年中时差相同,则认为此国家没有夏令时
 if ((middle.getTimezoneOffset() - start.getTimezoneOffset()) == 0) 
 {
   return false;
 }
 var margin = 0;
 if (this.isEastEarthTime(date)) {
   margin = middle.getTimezoneOffset();
 } else {
   margin = start.getTimezoneOffset();
 }
 if (date.getTimezoneOffset() == margin) {
   return true;
 }
 return false;
}
//DONE end

2. 服务器端php代码:

//24小时内 GMT到本地时间的转换
function gmt_to_local($time = '', $dst = FALSE){
  //JavaScript设置Cookie,PHP取值
  if (isset($_COOKIE["customer_timezone"])){
    $timezone = $_COOKIE["customer_timezone"];
  }else{
    $timezone = 0;
  }
  if ($time == ''){
    return now();
  }
  //时间处理
  $time += $timezone * 3600;
   
  //是否为夏令时
  if(isset($_COOKIE["inDaylightTime"]) && $_COOKIE["inDaylightTime"]==1)
  {
    $dst = TRUE;
  }
  if ($dst == TRUE){
    $time += 3600;
  }
  return date("H:i",$time);
}

希望本文所述对大家的php程序设计有所帮助。

Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn