"css/style.css",
"second" => "css/second.css",
"third" => "css/third.css"
];
// Get current stylesheet from the session, or use default
$key = isset($_SESSION['stylesheet'])
? $_SESSION['stylesheet']
: "default";
// See if the key actually matches a stylesheet
if (isset($stylesheets[$key])) {
$stylesheet = $stylesheets[$key];
} else {
die("The value of key='$key' does not match a valid stylesheet.");
}
// Get the selected page, or the default one
$page = (isset($_GET['page'])) ? $_GET['page'] : "intro";
// Where are the content-files
$dir = __DIR__ . "/content/";
// Array with all valid pages
$multipage = [
"intro" => "intro.php",
"current" => "current-value.php",
"get" => "change-get.php",
"dropdown" => "change-dropdown.php",
"post-dropdown" => "post-dropdown.php",
"postform" => "postform.php",
];
// Get the contentfile to include
if (isset($multipage[$page])) {
$file = $multipage[$page];
} else {
die("The value of ?page=" . htmlentities($page) . " is not recognized as a valid page.");
}
?>
Example stylechooser