Smalot\PdfParser\Document::getPages PHP Method

    public function getPages()
    {
        if (isset($this->dictionary['Catalog'])) {
            // Search for catalog to list pages.
            $id = reset($this->dictionary['Catalog']);
            /** @var Pages $object */
            $object = $this->objects[$id]->get('Pages');
            if (method_exists($object, 'getPages')) {
                $pages = $object->getPages(true);
                return $pages;
            }
        }
        if (isset($this->dictionary['Pages'])) {
            // Search for pages to list kids.
            $pages = array();
            /** @var Pages[] $objects */
            $objects = $this->getObjectsByType('Pages');
            foreach ($objects as $object) {
                $pages = array_merge($pages, $object->getPages(true));
            }
            return $pages;
        }
        if (isset($this->dictionary['Page'])) {
            // Search for 'page' (unordered pages).
            $pages = $this->getObjectsByType('Page');
            return array_values($pages);
        }
        throw new \Exception('Missing catalog.');
    }