Question

This is my first question here, probably a very simple one but I can’t really find how to do it.

When I tried to google it, I only came across cookies and sessions, but I don’t know how to use them, and was hoping there was a more simple way. I only started with PHP today.

On the following page I want the user to be able to switch background, text color, text decoration, etc. I got that to work as well, but I would love to find a way to save the previous choice, and add it to the next one.

So if someone picks a red background-color, it should not switch back to white when they pick another style, such as a black text color.

Is there a easy way (for starters like me) to fix this?

This is the site so far: http://mark.wigf7.sde.dk/PHP/opgave_g.php?baggrundfarve=FF8000

Answer 1

To use the $_SESSION superglobal, first begin by adding this to the top of your PHP script(s):

session_start();

Then you can store data in $_SESSION and access it later.

//Store user's selection
$_SESSION['bg_color'] = $bg_color_choice;

On next page:

//Use default of #FFFFFF unless user made selection.
$bg_color = isset($_SESSION['bg_color']) ? $_SESSION['bg_color'] : '#FFFFFF';

EDIT: Since you linked to the page you’ll be using:

$allowedColors = array(
    'FFFFFF',
    'D8D8D8',
    '000000'
);

if(isset($_GET['baggrundfarve']) && in_array($_GET['baggrundfarve'], $allowedColors)){
    $_SESSION['bg_color'] = $_GET['baggrundfarve'];
}