You could use Ajax to send the JS variables to PHP
Ajax Code: (found off of daniweb)
<script type="text/javascript">
function Send() {
function GetXmlHttpObject()
{
var xmlHttp=null;
try
{
// Firefox, Opera 8.0+, Safari
xmlHttp=new XMLHttpRequest();
}
catch (e)
{
// Internet Explorer
try
{
xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
}
catch (e)
{
xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
}
}
return xmlHttp;
}
xmlHttp=GetXmlHttpObject();
xmlHttp.onreadystatechange=changeofState;
//change the page below to you php page name
var url="something.php";
//change 'variable' to the name of the javascript variable that contains the dollar amount
url = url+"?amt="+variable;
url = url+"&sid"+Math.random();
xmlHttp.open("GET",url,true);
xmlHttp.send(null);
function changeofState()
{
if(xmlHttp.readyState==4)
{
document.write('ok');
}
}
}
</script>
Another way that you can do it is using JS to redirect the page.
<script language="JavaScript">
var sendvar = 55;
location.href="something.php?key=" + sendvar;
</script>
