[RESOLVED] Variable from JavaScript to PHP

gszauer

<html>
<head>
<title></title>
<script language="JavaScript">
var ieDiffWidth;
var ieDiffHeight;
function init() {
  var w, h, offW, offH, diffW, diffH;
  var fixedW = 800;
  var fixedH = 600;
  if (document.all) {
    offW = document.body.offsetWidth;
    offH = document.body.offsetHeight;
    window.resizeTo(fixedW, fixedH);
    diffW = document.body.offsetWidth  - offW;
    diffH = document.body.offsetHeight - offH;
    w = fixedW - diffW;
    h = fixedH - diffH;
    ieDiffWidth  = w - offW;
    ieDiffHeight = h - offH;
    window.resizeTo(w, h);
  }
}
function outerWd() {
  if (document.all)
    return document.body.offsetWidth  + ieDiffWidth;
  else
    return window.outerWidth;
}
function outerHt() {

  if (document.all)
    return document.body.offsetHeight  + ieDiffHeight;
  else
    return window.outerHeight;
}
</script>
</head>
<body onload="init()">
<?php
   $flashW = outerWd();
   $flashH = outerHt();
?>
<a href="#" onclick="alert(outerWd() + 'x' + outerHt()); return 
false;">Show Outer Dimensions</a>

</body>
</html>
  </html>

I am trying to get outerWd(), and outerHt() from Javascript into php..... Can anyone please help out....
Thanks for your time
~Gabor

Piranha

That is not possible. To help you understand why I will try to explain how PHP and JavaScript works.

PHP is fun on the server, and sends code to the browser.

JavaScript is run on the browser, and the code is like normal HTML code.

When PHP is done everything is sent to the browser, after that the browser runs the javascript. So when the javascript is run there is no longer any connection to the server, and javascript can't transfer variables to PHP.

LordRogaine

It can be done, but it's a bit tricky. Took me awhile until I got it right. The problem is that you have to transfer your javascript variable through the browser and then convert it on another page to the php variable. It can't be done on the same page unless you reload that page. Here is how I did it. I placed the javascript variable (jsVAR) through the browser by making it part of a link. The link is very tricky. The way I have it set up here works. Just substitute the url.

Using $_GET['jsVar'] I used this second bit of code to convert the javascript variable to a php variable on the second page.

<?
if(isset($GET['jsVar'])) {
$phpVar = $GET['jsVar'];

echo $phpVar;
}

?>

phpmixx

Also

<script> document.cookie="tmp1="+document.body.offsetWidth; </script>
<?php
echo "offsetWidth: $tmp1";
?>