Symfony\Component\HttpFoundation\Request::preparePathInfo PHP Method

    protected function preparePathInfo()
    {
        $baseUrl = $this->getBaseUrl();

        if (null === ($requestUri = $this->getRequestUri())) {
            return '/';
        }

        // Remove the query string from REQUEST_URI
        if ($pos = strpos($requestUri, '?')) {
            $requestUri = substr($requestUri, 0, $pos);
        }

        $pathInfo = substr($requestUri, strlen($baseUrl));
        if (null !== $baseUrl && (false === $pathInfo || '' === $pathInfo)) {
            // If substr() returns false then PATH_INFO is set to an empty string
            return '/';
        } elseif (null === $baseUrl) {
            return $requestUri;
        }

        return (string) $pathInfo;
    }