<?php
$html = '<div id="one">
        <select id="first">
        </select>
        </div>
        <div id="two">
        <select id="second">
        </select>
        </div>';
$dom = new DOMDocument();
$dom->validateOnParse = true;
$dom->loadHTML($html);
$result_one = get_model();
$string = "audi BMW BMW Ford Ford Ford Ford Ford A6 'A5' mokka mokka.";
if($result_one == true){
    while($row = mysqli_fetch_array($result_one)){
        $pattern = "/b" . $row["name_model"] . "b/i";
        if (preg_match_all($pattern, $string, $matches)){
            for ($i=0; $i < count($matches[0]); $i++){
                $count = count($matches[0]);
                $result = $matches[0][$i];
                $result_id = $row["brand_id"];
            }//echo $count;

            $item = $dom->getElementById('first');
            $opt = $item->appendChild($dom->createElement("option", $result));

            $query  = "SELECT * ";
            $query .= "FROM brands ";
            $query .= "WHERE brand_id = $result_id ";
            $result_match = mysqli_query($link, $query);

            $result_two = $result_match;
            var_dump($result_two);
            if($result_two == true) {
                while($row = mysqli_fetch_array($result_two)){
                    $res = $row["brand_name"];

                    $item_2 = $dom->getElementById('second');
                    $opt = $item_2->appendChild($dom->createElement("option", $res));
                }

            }
        }

    }


}
echo $dom->saveHTML();
?>