Base::merge PHP Method

    function merge($key, $src, $keep = FALSE)
    {
        $ref =& $this->ref($key);
        if (!$ref) {
            $ref = [];
        }
        $out = array_merge($ref, is_string($src) ? $this->hive[$src] : $src);
        if ($keep) {
            $ref = $out;
        }
        return $out;
    }