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<?php
if (isset($_GET['page'])) // Check ?page is set.
{
$page = htmlspecialchars($_GET['page']); // Remove invalid characters.
if (file_exists($page .'.php')) // Does the page exists?
{
include($page .'.php'); // Include page
}
else // Page doesn't exist, include error page.
{
include ('404error.php'); // Error page.
}
}
else // ?page is not set, include home page.
{
include ('home.php'); // Home page
}
?>
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