Javascript+php implements the method of displaying local time according to user time zone, JavaScript local _php tutorial

Javascript+php implements the method of displaying local time based on the user's time zone, JavaScript local

This article describes the Javascript+php implementation method that displays local time based on the user's time zone. Share to everyone for your reference. Specific as follows:

The following code is used in a cross-time zone application, which is a previously written piece of code.

The server saves the relevant time configuration, save in the form of GMT time, the client needs to be displayed according to the customer's time zone, in order to conform to customer habits.

1. The JavaScript code is as follows:

Window.onload = function () {//TODO begin processing Login user Time zone//Get login User Time zone and GMT time zone difference var exp = new Date ();    var gmthours =-(Exp.gettimezoneoffset ()/60);    Setcookie (' Customer_timezone ', gmthours,1);    Determine if daylight saving time date = Exp.format (' yyyy-mm-dd HH:mm:ss ');    if (indaylighttime (date)) {Setcookie (' indaylighttime ', 1, 1); }}//set cookiefunction Setcookie (c_name,value,expiredays) {var exdate=new Date () exdate.setdate (Exdate.getdate () +expi Redays) document.cookie=c_name+ "=" +escape (value) + ((expiredays==null)? "" : "; Expires= "+exdate.togmtstring ())}//Determine whether the time is the Eastern hemisphere or the hemispheric function Iseastearthtime (newdate) {var dj= newdate.getgmtoffset (  FALSE);  if (Dj.indexof ("-") = =-1) {return true;  } else {return false; }}//is daylight saving time 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); If the year starts and the mid-year time difference is the same, it is considered that there is no daylight saving time 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. Server-side PHP code:

24 hours GMT to local time conversion function gmt_to_local ($time = ", $dst = FALSE) {  //javascript set cookie,php value  if (Isset ($_ cookie["Customer_timezone"]) {    $timezone = $_cookie["Customer_timezone"];  } else{    $timezone = 0;  }  if ($time = = ") {    return now ();  }  Time processing  $time + = $timezone * 3600;     is daylight saving time  if (Isset ($_cookie["Indaylighttime") && $_cookie["Indaylighttime"]==1)  {    $DST = TRUE;  }  if ($dst = = TRUE) {    $time + = 3600;  }  Return date ("H:i", $time);}

I hope this article is helpful to everyone's PHP programming.

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