Javascript+php implementing methods for displaying local time based on user Time zone _php tutorial

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

This article mainly introduces the javascript+php implementation of the local time according to the user time zone method, instance analysis JavaScript to obtain the client time zone and the server-side PHP interaction skills, with a certain reference value, the need for friends can refer to the next

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:

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Window.onload = function () { TODO begin processing Login user Time zone Get the difference between the login user time zone and GMT time zone var exp = new Date (); var gmthours =-(Exp.gettimezoneoffset ()/60); Setcookie (' Customer_timezone ', gmthours,1); Determine if daylight saving time is Date = Exp.format (' yyyy-mm-dd HH:mm:ss '); if (indaylighttime (date)) { Setcookie (' Indaylighttime ', 1, 1); } } Set cookies 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 ()) } Judging whether the time is the old or the Western Hemisphere function Iseastearthtime (newdate) { var dj= newdate.getgmtoffset (false); if (Dj.indexof ("-") = =-1) { return true; } else { return false; } } Whether it 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 middle time difference is the same, it is considered that the country does not have daylight 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:

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///+ convert GMT to local time 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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