<pre> 
&lt;?php

error_reporting(E_ALL ^ E_WARNING ^ E_NOTICE);      //all error but warnigns & notices

$option   = $_GET['option'];
$varName  = $_POST['varName'];  
$varValue = $_POST['varValue'];  

//ini_set('session.use_trans_sid', true);       #in case it is not set in the php.ini file
session_start();                                #start a session

if ($option =='add')                            #add item to the $_SESSION array
    $_SESSION[$varName] = $varValue;

if ($option =='del')                            #delete item from $_SESSION array
    unset($_SESSION[$varName]);
?>                          

&lt;html>
&lt;head>
&lt;title>Session Variables List&lt;/title>
&lt;/head>

&lt;body bgcolor=lightyellow>
&lt;h1>Create and Read Session Variables&lt;/h1>

&lt;h2>Your Session variables Are:&lt;/h2>

&lt;table border=2 bgcolor=tan>
&lt;tr bgcolor=cccccc>&lt;th>&lt;i>Variable Name&lt;th>&lt;i>Variable Value&lt;/th>

&lt;?php
        
    foreach ($_SESSION as $name => $value)                      //loop through $_SESSION array
        print  "&lt;tr>&lt;td>&lt;b>$name&lt;td>$value&lt;/td>&lt;/tr> \n";       //print variable name & value

    print "&lt;/table>";
    
    if (!$_SESSION)
        print "&lt;h4>There are no session variables&lt;/h4>"; 
?>

&lt;?php include "../include.php"; ?>      &lt;!-- hyperlink to see the code -->
&lt;/body>
&lt;/html>
</pre>