yii\web\UrlRule::parseRequest PHP Method

    public function parseRequest($manager, $request)
    {
        if ($this->mode === self::CREATION_ONLY) {
            return false;
        }
        if (!empty($this->verb) && !in_array($request->getMethod(), $this->verb, true)) {
            return false;
        }
        $suffix = (string) ($this->suffix === null ? $manager->suffix : $this->suffix);
        $pathInfo = $request->getPathInfo();
        $normalized = false;
        if ($this->hasNormalizer($manager)) {
            $pathInfo = $this->getNormalizer($manager)->normalizePathInfo($pathInfo, $suffix, $normalized);
        }
        if ($suffix !== '' && $pathInfo !== '') {
            $n = strlen($suffix);
            if (substr_compare($pathInfo, $suffix, -$n, $n) === 0) {
                $pathInfo = substr($pathInfo, 0, -$n);
                if ($pathInfo === '') {
                    // suffix alone is not allowed
                    return false;
                }
            } else {
                return false;
            }
        }
        if ($this->host !== null) {
            $pathInfo = strtolower($request->getHostInfo()) . ($pathInfo === '' ? '' : '/' . $pathInfo);
        }
        if (!preg_match($this->pattern, $pathInfo, $matches)) {
            return false;
        }
        $matches = $this->substitutePlaceholderNames($matches);
        foreach ($this->defaults as $name => $value) {
            if (!isset($matches[$name]) || $matches[$name] === '') {
                $matches[$name] = $value;
            }
        }
        $params = $this->defaults;
        $tr = [];
        foreach ($matches as $name => $value) {
            if (isset($this->_routeParams[$name])) {
                $tr[$this->_routeParams[$name]] = $value;
                unset($params[$name]);
            } elseif (isset($this->_paramRules[$name])) {
                $params[$name] = $value;
            }
        }
        if ($this->_routeRule !== null) {
            $route = strtr($this->route, $tr);
        } else {
            $route = $this->route;
        }
        Yii::trace("Request parsed with URL rule: {$this->name}", __METHOD__);
        if ($normalized) {
            // pathInfo was changed by normalizer - we need also normalize route
            return $this->getNormalizer($manager)->normalizeRoute([$route, $params]);
        } else {
            return [$route, $params];
        }
    }

 public function parseRequest($manager, $request)
 {
     $result = parent::parseRequest($manager, $request);
     if (isset($result[1]) && $result[1]['route']) {
         $route = $result[1]['route'];
         $page = Page::getDb()->cache(function () use($route) {
             return Page::find()->where(['route' => $route])->one();
         });
         if ($page) {
             return [$this->route, ['route' => $route]];
         }
     }
     return false;
 }