redirect-to-primary-domain.php

<?php declare (strict_types=1);

// Always redirect to the primary domain when hosted on Wodby.
if (!empty($_SERVER['WODBY_HOST_PRIMARY']) && php_sapi_name() !== 'cli') {
    if( preg_match('/^(http[s]?:\/\/)?(.*)$/', $_SERVER['WODBY_HOST_PRIMARY'], $matches)) {
        $primary_host = $matches[2];
        if ($_SERVER['HTTP_HOST'] !== $primary_host) {
            $primary_url = isset($_SERVER['WODBY_URL_PRIMARY']) 
                ? $_SERVER['WODBY_URL_PRIMARY'] 
                : $_SERVER['WODBY_HOST_PRIMARY'];
            header('HTTP/1.0 301 Moved Permanently');
            header('Location: ' . $primary_url . $_SERVER['REQUEST_URI']);
            exit();
        }
    }
}