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Editorial Team
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Asked: 2026-05-12T11:50:15+00:00

I would like to add a feature onto my site that would allow a

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I would like to add a feature onto my site that would allow a user to choose between multiple styles. I have seen this feature on other sites. How would I go about doing this or could somebody refer me to a tutorial or guide on how this can be done?

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1 Answer

  1. Editorial Team

    To start you off, you could simply make the stylesheet link(s) dynamic:

    <link rel="stylesheet" href="<?=$style?>" type="text/css"/>

    And provide links that change them:

    <a href="/page.php?theme=racecar">Racecar</a>

    On the server, assign $style according to the query string, it would also be a good idea to default to something in case the user decides to modify the URL:

    <?php
    $stylesArr = array('racecar', 'magenta', 'cartman');
    if(isset($_GET['theme']) && in_array($_GET['theme'], $stylesArr)) {
        $style = $_GET['theme'] . '.css';
        setcookie("theme", $style, time()+(3600*24*30));//expires in one month
    } else {
        if(isset($_COOKIE['theme']) && in_array($_COOKIE['theme'], $stylesArr)) {
            $style = $_COOKIE['theme'] . '.css';
        } else {
            $style = 'default.css';
        }
    }
?>
<link rel="stylesheet" href="<?=$style?>" type="text/css"/>

    You can propogate the user’s style via the query string, cookies or sessions.

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