Normalizing Repeated Slashes in Evolution CMS URLs

Malformed URLs with repeated slashes are ugly, but the bigger problem is that they can create duplicate paths and undefined routing behavior. The original topic tackled exactly that in Evolution CMS.

Typical Check

if (stristr($_SERVER['REQUEST_URI'], '//')) {
    $g = preg_replace('|[//\s]+|is', '/', $_SERVER['REQUEST_URI']);
    $modx->sendRedirect($g);
}

Alternative

if (stristr($_SERVER['REQUEST_URI'], '//')) {
    $modx->sendErrorPage();
}

Which Is Better?

Redirecting is useful when the malformed URL is clearly recoverable. Returning a 404 is better when you want to avoid normalizing obviously broken or suspicious paths automatically.

The important thing is to choose one policy and keep it consistent. Repeated slashes should never become a second valid URL shape for the same page.