resolution - Get user's screen&viewport dimensions in php on first load -


i want in php height/width of both screen , viewport when user visits page.

i've tried different ways cause other problems.

my goals:

  • get info on first load (no jump page, no reload).

  • not change url

  • not affect rest of php runs on load, or make php run twice

what i've tried far:

javascript viewport dimensions:

if(!isset($_post['width']) || !isset($_post['height'])) { echo ' <script type="text/javascript" src="jquery.min.js"></script> <script type="text/javascript"> $(document).ready(function () {     var height = $(window).height();     var width = $(window).width();     $.ajax({         type: \'post\',         data: {             "height": height,             "width": width         },         success: function (data) {             $("body").html(data);         },     }); }); </script> '; }  $user_width = $_post['width']; $user_height = $_post['height'];

problems: causes php run twice, once on load, once when returns value (the second time 4 seconds after first), makes rest of php wacky... also, makes page load slow

putting screen dimensions url:

if(isset($_session['screen_width']) , isset($_session['screen_height'])){     $user_width = $_session['screen_width'];     $user_height = $_session['screen_height'];     } else if(isset($_request['width']) , isset($_request['height'])) {         $_session['screen_width'] = $_request['width'];         $_session['screen_height'] = $_request['height'];         header('location: ' . $_server['php_self']);     } else {         echo '<script type="text/javascript">window.location = "' . $_server['php_self'] . '?width="+screen.width+"&height="+screen.height;</script>';     }

problems: changes url (which affects other code , looks bad compared expressionless urls have now); doesn't return viewport size afaik

i'm noob. maybe it's easy do, don't know. searched lot. that's how got methods above. couldn't them work me. afaik, haven't seen solution anywhere similar situation.

thanks :)

how having document ready ajax request send separate php document, include in head on page load. way, can have whatever specific html want loaded put straight body when ready.

for example: 

<head> <script> $(document).ready( function() {     var height = $(window).height();     var width = $(window).width();     $.ajax({         url: 'body.php',         type: 'post',         data: { 'width' : width, 'height' : height, 'recordsize' : 'true' },         success: function(response) {             $("body").html(response);         }     }); }); </script> </head> <body></body>

and body.php file like: 

<?php if(isset($_post['recordsize'])) { $height = $_post['height']; $width = $_post['width']; $_session['screen_height'] = $height; $_session['screen_width'] = $width; //any html want returned in here

if didn't want js function run every page load, encase whole thing in <?php if(isset($_session['screen_height'])) { //js function } ?>

i'm not 100% sure intending dimensions once have them, apologise if answer little vague, doing way page sets saved dimensions on first visit browsing session, , doesn't have redirect, hope it's @ least little helpful :)


Comments

Post a Comment

Popular posts from this blog

image - ClassNotFoundException when add a prebuilt apk into system.img in android -

i'm in trouble add prebuilt apk system.img based taiwan mtk android phone platform, when push apk onto device,after reboot phone,the apk can installed succecessfully,but if add apk alps/out/target/product/$prj/system/app or vendor/mediatek/$prj/artifacts/out/target/product/$prj/system/app ,and produce system.img,the apk can't installed normally,the logcat say: a.lang.runtimeexception: unable instantiate activity componentinfo{com.sec.android.widgetapp.ap.hero.accuweather.widget/com.sec.android.widgetapp.ap.hero.accuweather.widget.weatherclock}: java.lang.classnotfoundexception: com.sec.android.widgetapp.ap.hero.accuweather.widget.weatherclock. can tell me what's problem ? when package manager installs apps part of system partition different installing apps on data partition. looks app using libraries somewhere else. when install on data lib directory created in apps data directory , symlinked /data/app-lib/. when apps installed on system it's expecte...
Read more

I need to import mysql 5.1 to 5.5? -

i have mysql 5.1 database , need import localhost running 5.5. how import 5.5 or downgrade mysql? install phpmyadmin 5.1 os: http://www.wikihow.com/install-phpmyadmin-on-your-windows-pc or https://www.digitalocean.com/community/articles/how-to-install-and-secure-phpmyadmin-on-ubuntu-12-04 then login, click on database, hit export, , export in sql format (quick fine). import .sql file 5.5 server (after installing phpmyadmin) logging in clicking database , hit import. hope helps!
Read more

Java, Hibernate, MySQL - store UTC date-time -

i saw here on few related questions (like this one , of course, this one )... essentially, want store date-time utc, , let application user choose time zone wants display date-time in. since seems date-time fields affected underlying jdbc driver, wonder if acceptable way go storing utc date-time: set both mysql , application server machine utc time zone (no need separate) both mysql , jvm should pick underlying system time settings (if not instructed otherwise) use datetime table columns on mysql side use java.util.date corresponding mapping on hibernate side (i guess java.sql.timestamp used too) let application worry interpreting date-time fields - i.e. let user choose preferred time zone is ok? edit clarify - here meant refer timestamps created strictly on server (e.g.date-time of record creation). application server instantiates date objects (new date() equals current date-time on server, , time zone agnostic). if client user wants supply date searching/filte...
Read more