My function looks like that. It works but does lots of work (recursively calls itself and does lots of db queries.). There must be another way to do same thing but with array (with one query). I can't figure out how to modify this function to get it work with array. Please help.

function genMenu($parent, $level, $menu, $utype) {
    global $db;
    $stmt=$db->prepare("select id, name FROM navigation WHERE parent = ? AND menu=? AND user_type=?") or die($db->error);
    $stmt->bind_param("iii", $parent, $menu, $utype) or die($stmt->error);
    $stmt->execute() or die($stmt->error);

    $stmt->store_result();
    /* bind variables to prepared statement */
$stmt->bind_result($id, $name) or die($stmt->error);
    if ($level > 0 && $stmt->num_rows > 0) {
        echo "\n<ul>\n";
    }
    while ($stmt->fetch()) {
        echo "<li>";
        echo '<a href="?page=' . $id . '">' . $name . '</a>';
        //display this level's children
        genMenu($id, $level+1, $menu, $utype);
        echo "</li>\n\n";
    }
    if ($level > 0 && $stmt->num_rows > 0) {
        echo "</ul>\n";
    }
    $stmt->close();
}