3val error

gistfile1.php

<?php

$queryString = '

            SELECT
                land.*,
                COALESCE(NULLIF(landsprache.ort, ""), land.ort) AS ort
            FROM land
                INNER JOIN landsprache ON (land.landid=landsprache.landid and landsprache.spracheid = ?)
            WHERE (webinaktiv = 0) ORDER BY COALESCE(NULLIF(landsprache.ort, ""), land.ort) ASC
';


var_dump(preg_match_all('{(["\'])([^"\']+\1)|(\?)}', $queryString, $matches));
var_dump($matches[0]);