ต้องการสร้างเมนูหลัก แล้วมีเมนูย่อยๆ โดยดึงข้อมูลจาก database ต้องทำยังไงครับ

<li class="parent">
				<a href="<?=PATH_URL?>/ผลิตภัณฑ์"  title="<?=$meta['a_title']?>">ผลิตภัณฑ์</a>
				
				<?php
			
				$sql = "SELECT DISTINCT `cate_id` FROM ".TBL_PRODUCT." WHERE 1 AND `active`='Y';";
				$query = mysqli_query($oconn,$sql);
				$arr_cate=array();
				while($row=mysqli_fetch_assoc($query)){
					$arr_cate2[] = $row['cate_id'];
				}mysqli_free_result($query);

				?>
				<?php
				$sql = "SELECT DISTINCT `category_id` FROM ".TBL_BRAND." WHERE 1 ";
				$query = mysqli_query($oconn,$sql);
				$arr_cate=array();
				while($row=mysqli_fetch_assoc($query)){
					$arr_cate[] = $row['category_id'];
				}mysqli_free_result($query);
				
				if(count($arr_cate && arr_cate2)>0){

				?>
					<ul class="sub">

					<?php
					foreach( $arr_cate as $key ){
						
						$cate = get_productCate($key);
					?>
						<li class="parent"><a href="javascript:;"  title="<?=$meta['a_title']?>"><?=$cate['name']?></a>
							<ul class="sub">
							<?php
							$sql = "SELECT `id`,`Brand_name` FROM ".TBL_BRAND." where `category_id`='".$key."' ORDER BY `Brand_name` ASC;";
							$query = mysqli_query($oconn,$sql);
							while($row=mysqli_fetch_assoc($query)){
							?>
							<li class="parent"><a href="javascript:;"  title="<?=$meta['a_title']?>"><?=$row['Brand_name']?></a>
							
							<?php
							}mysqli_free_result($query);
							?>
							<ul class="sub">
							<?php
				
							$sql = "SELECT `id`,`name` FROM ".TBL_PRODUCT." WHERE `active`='Y' AND `cate_id`='".$key."' AND `b_id`= `b_id` ORDER BY `name` ASC;";
							$query = mysqli_query($oconn,$sql);
							while($row=mysqli_fetch_assoc($query)){
							?>
							<li><a href="<?=PATH_URL?>/ผลิตภัณฑ์/<?=$row['id']?>-<?=str_replace(" ","_",$row['name'])?>.html"   title="<?=$meta['a_title']?>"><?=$row['name']?></a></li>
							<?php
							}mysqli_free_result($query);
							?>
							</ul>
							</li>
							</ul>
						</li>
					<?php
					}
					?>
					
					</ul>
					
				<?php
				}
				?>
							
			  </li>