Ojs\CoreBundle\Service\Search\NativeQueryGenerator::getJournalIdFromQuery PHP Method

    private function getJournalIdFromQuery()
    {
        $explodeQuery = explode(' ', $this->query);
        foreach ($explodeQuery as $value) {
            if (preg_match('/journal:/', $value)) {
                return (int) explode('journal:', $value)[1];
            }
        }
        return false;
    }