SOLR_SERVER_HOSTNAME, 'login' => SOLR_SERVER_USERNAME, 'password' => SOLR_SERVER_PASSWORD, 'port' => SOLR_SERVER_PORT, ); $client = new SolrClient($options); $query = new SolrQuery(); $userInput = 'USB/2'; $escapedUserInput = SolrUtils::escapeQueryChars($userInput); $query->setQuery('text:'.$escapedUserInput); echo $query.PHP_EOL;