<?php
session_start();
if(isset($_GET["sessionVar"])) {
$svar = $_GET["sessionVar"];
$_SESSION["sessionVar"] = $svar;
echo "sessionVar with value $svar is saved to session variables !";
}
else {
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script language="javascript">
function saveChoiceToSession(o) {
var sessionVar = o.options[o.selectedIndex].value;
if(sessionVar!=null) {
var xmlhttp = null;
if(window.XMLHttpRequest) { xmlhttp=new XMLHttpRequest(); } else{ xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); }
if(xmlhttp != null) {
xmlhttp.open("GET","saveToSession.php?sessionVar="+sessionVar,false);
xmlhttp.send();
alert(xmlhttp.responseText);
return;
}
alert("bad news : ajax call failed !");
return;
}
}
</script>
</head>
<body>
<select onchange="saveChoiceToSession(this)">
<option value="">Choose one...</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
</select>
</body>
</html>
<?
}
?>
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