<?php
session_start(); // start session
session_destroy(); // Delete whole session
// OR
unset($_SESSION['username']); // delete any specific session only
?><?php
// Start new or resume existing session.
session_start();
// Add values to the session.
$_SESSION['item_name'] = 'value'; // string
$_SESSION['item_name'] = 0; // int
$_SESSION['item_name'] = 0.0; // float
// Get session values.
$value = $_SESSION['item_name'];
?><?php
// Start the session
session_start();
// Set session variables
$_SESSION["color"]= "blue";
$_SESSION["animal"]= "dog";
echo "The session variable are set up.";
?><?php
session_start();
$_SESSION['var'];
?><?php
session_start();
echo session_id();
?>
<form action="login.php" method="post">
Dein Name: <br />
<input type="Text" name="name" />
<input type="Submit" />
</form>