$_session = array() code example
Example: session php
<?php
// start session before any HTML
session_start();
// create some variales in $_SESSION
$_SESSION['name'] = 'myname';
$_SESSION['surname'] = 'mysurname';
$_SESSION['age'] = 24;
?>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>My page</title>
</head>
<body>
<p>
Hey <?php echo $_SESSION['name']; ?> !<br />
How are you today ?
</p>