Item::get_authors(): SimplePie\Author[]|null

553    public function get_authors()554    {555        $authors = [];556        foreach ((array) $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_10, 'author') as $author) {557            $name = null;558            $uri = null;559            $email = null;560            if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'])) {561                $name = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);562            }563            if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'])) {564                $uri = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['uri'][0]));565            }566            if (isset($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'])) {567                $email = $this->sanitize($author['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_10]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);568            }569            if ($name !== null || $email !== null || $uri !== null) {570                $authors[] = $this->registry->create(Author::class, [$name, $uri, $email]);571            }572        }573        if ($author = $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_ATOM_03, 'author')) {574            $name = null;575            $url = null;576            $email = null;577            if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'])) {578                $name = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['name'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);579            }580            if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'])) {581                $url = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_IRI, $this->get_base($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['url'][0]));582            }583            if (isset($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'])) {584                $email = $this->sanitize($author[0]['child'][\SimplePie\SimplePie::NAMESPACE_ATOM_03]['email'][0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT);585            }586            if ($name !== null || $email !== null || $url !== null) {587                $authors[] = $this->registry->create(Author::class, [$name, $url, $email]);588            }589        }590        if ($author = $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_RSS_20, 'author')) {591            $authors[] = $this->registry->create(Author::class, [null, null, $this->sanitize($author[0]['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT)]);592        }593        foreach ((array) $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_DC_11, 'creator') as $author) {594            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);595        }596        foreach ((array) $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_DC_10, 'creator') as $author) {597            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);598        }599        foreach ((array) $this->get_item_tags(\SimplePie\SimplePie::NAMESPACE_ITUNES, 'author') as $author) {600            $authors[] = $this->registry->create(Author::class, [$this->sanitize($author['data'], \SimplePie\SimplePie::CONSTRUCT_TEXT), null, null]);601        }602 603        if (!empty($authors)) {604            return array_unique($authors);605        } elseif (($source = $this->get_source()) && ($authors = $source->get_authors())) {606            return $authors;607        } elseif ($authors = $this->feed->get_authors()) {608            return $authors;609        }610 611        return null;612    }