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Asked 3 years ago
17 Jun 2021
Views 215
Johnson

Johnson posted

maintain session between the pages in php?

maintain session between the pages in php?
jassy

jassy
answered Apr 27 '23 00:00

To maintain a session between pages in PHP, you need to start a session with session_start() at the beginning of each PHP script that needs to access session variables.

Once a session is started, you can set session variables using the $_SESSION superglobal array, and retrieve them on other pages by starting the session and accessing the same array.

Here's an example of how to maintain a session between pages in PHP:

Page 1 (login.php)



// Start the session
session_start();

// Set a session variable
$_SESSION['user_id'] = 123;

// Redirect to another page
header('Location: dashboard.php');
exit;

In this example, a session is started with session_start(), and a session variable named user_id is set to 123 using $_SESSION['user_id'] = 123.

The user is then redirected to the dashboard.php page using the header() function, which sends an HTTP header to the browser to redirect the user to the specified URL.

Page 2 (dashboard.php)



// Start the session
session_start();

// Check if the user is logged in
if (!isset($_SESSION['user_id'])) {
    // Redirect to the login page
    header('Location: login.php');
    exit;
}

// Retrieve the user ID from the session
$user_id = $_SESSION['user_id'];

// Display the user ID
echo "User ID: " . $user_id;

In this example, the session is started with session_start() , and it is checked if the user_id session variable is set. If the variable is not set, the user is redirected to the login page using header().

If the user_id variable is set, it is retrieved from the session using $_SESSION['user_id'] , and it is displayed on the web page using echo.

Note that the session variables will be available on any PHP script that starts the same session using session_start(). To end a session, you can use session_unset() to remove all session variables, and session_destroy() to destroy the session data on the server.
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