how to get screen width through php? [duplicate]

Answer 1

Not possible with complete php you might need to use javascript too Anyway try this

<?php
session_start();
if(isset($_SESSION['screen_width']) AND isset($_SESSION['screen_height'])){
    echo 'User resolution: ' . $_SESSION['screen_width'] . 'x' . $_SESSION['screen_height'];
} else if(isset($_REQUEST['width']) AND 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>';
}
?>

Answer 2

I am not sure, But It may help you

    <script src="http://code.jquery.com/jquery-1.9.1.js"></script>
    <script>
    var width = $(window).width();
    //This is ajax code which will send width to your php page in the screenWidth variable
    $.ajax({
    url: "example.php", //this will be your php page 
    data : {screenwidth:width} 
    }).done(function() {
    $(this).addClass("done");
    });
    </script>

    //example.php code is here :
    <?php
    echo $width = $_REQUEST['screenwidth'];
    ?>

Answer 3

I agree that it is a bad idea to rely on screen width from the client but here, for your edification:

javascript:

    if (window.XMLHttpRequest)
  {// code for IE7+, Firefox, Chrome, Opera, Safari
  xmlhttp=new XMLHttpRequest();
  }
else
  {// code for IE6, IE5
  xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
xmlhttp.open("GET","set_screen_width.php?s="+screen.width,false);
xmlhttp.send();

If you execute this script on loading the page, it will check the screen width and send it to your php file which needs to be something like:

    <?PHP
session_start();
$_SESSION['screen']['width']=$_GET['s'];
?>

All your other PHP pages can then access the $_SESSION variable vis:

<?PHP
session_start();
$screen_width=$_SESSION['screen']['width'];

etc...

It is better not to try to send HTML that will only look good in one screen width. You can, but it's a losing game. You just don't know what the client is going to do with it. Suppose, for instance, that they have low vision and like to use a larger font.