php session() code example

Example 1: session storage

// Save data to sessionStorage
sessionStorage.setItem('key', 'value');

// Get saved data from sessionStorage
let data = sessionStorage.getItem('key');

// Remove saved data from sessionStorage
sessionStorage.removeItem('key');

// Remove all saved data from sessionStorage
sessionStorage.clear();

Example 2: php sessions

<?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'];
?>

Example 3: php session variables

<?php
   session_start();
   $_SESSION['var'];
?>

Example 4: php session

/*Sessions are stored on the server
Sessions are a way to carry data across multiple pages. 
Typically if we set a variable on one page, it wouldn't be available 
on the next page. This is where Sessions come in. Unlike cookies session
data is not stored on the user's computer. It is stored on the server. 
In order to use session variables you have to start a session. 
Every page, that you want to use that data in, you have to use 
session_start.

If you want to unset one of these sessions you can use session_unset

youcan destry the session with session_destroy
*/

<?php if(isset($_POST['submit']))
{ session_start(); // that will start the session
$_SESSION['name'] = htmlentities($_POST['name']);
$_SESSION['email'] = htmlentities($_POST['email']);
header('Location: page2.php'); } ?>
<!DOCTYPE html>
<html>
<head>
<title>PHP Sessions</title>
</head>
<body>
<form method="POST" action="<?php echo $server['PHP_SELF'];?>">
<input type="text" name="name" placeholder="Enter Name">
<br>
<input type="text" name="email" placeholder="Enter Email">
<br>
<input type="submit" name="submit" value="submit">
</form>
</body>
</html>

Example 5: session management

Session is a State Management Technique.
A Session can store the value on the Server.
It can support any type of object to be
stored along with our own custom objects

Example 6: session

<?php
// On démarre la session AVANT d'écrire du code HTML
session_start();

// On s'amuse à créer quelques variables de session dans $_SESSION
$_SESSION['prenom'] = 'Jean';
$_SESSION['nom'] = 'Dupont';
$_SESSION['age'] = 24;
?>

<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <title>Titre de ma page</title>
    </head>
    <body>
    <p>
        Salut <?php echo $_SESSION['prenom']; ?> !<br />
        Tu es à l'accueil de mon site (index.php). Tu veux aller sur une autre page ?
    </p>
    <p>
        <a href="mapage.php">Lien vers mapage.php</a><br />
        <a href="monscript.php">Lien vers monscript.php</a><br />
        <a href="informations.php">Lien vers informations.php</a>
    </p>
    </body>
</html>

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