Webmozart\Expression\Traversal\ExpressionTraverser::traverseConjunction PHP Méthode

    private function traverseConjunction(AndX $expr)
    {
        $conjuncts1 = $expr->getConjuncts();
        $conjuncts2 = array();
        foreach ($conjuncts1 as $conjunct) {
            if ($conjunct = $this->traverse($conjunct)) {
                $conjuncts2[] = $conjunct;
            }
        }
        if ($conjuncts1 === $conjuncts2) {
            return $expr;
        }
        return $conjuncts2 ? new AndX($conjuncts2) : null;
    }