i need to bring all products for this category and sub category to end level .

what wrong i did ?

<?php
				function listproducts ($category_img=filter_var($_GET['category'],FILTER_SANITIZE_NUMBER_INT)){
					global $conn;
					$sql_cat_name="select * from categories where cat_id='$category_img' or cat_id in (select cat_id from categories where cat_parent_id='$category_img')";
					$query_cat_name=mysqli_query($conn,$sql_cat_name);
					while($result_cat_name=mysqli_fetch_array($query_cat_name)){
						$ref_id=$result_cat_name['cat_id'];
						$show_all_pro="select * from products where product_category='$ref_id'";
						$query_show_all=mysqli_query($conn,$show_all_pro);
						while($result_show_all=mysqli_fetch_array($query_show_all)){
					?>
					<!-- 12 product.-->
                <div class="category-product-inner wow fadeInUp">
                  <div class="products">
                    <div class="product-list product">
                      <div class="row product-list-row">
                        <div class="col col-sm-4 col-lg-4">
                          <div class="product-image">
                            <div class="image"> <img src="assets/images/products/p3.jpg" alt=""> </div>
                          </div>
                          <!-- /.product-image --> 
                        </div>
                        <!-- /.col -->
                        <div class="col col-sm-8 col-lg-8">
                          <div class="product-info">
                            <h3 class="name"><a href="detail.html">Floral Print Buttoned</a></h3>
                            <div class="rating rateit-small"></div>
                            <div class="product-price"> <span class="price"> $450.99 </span> <span class="price-before-discount">$ 800</span> </div>
                            <!-- /.product-price -->
                            <div class="description m-t-10">Suspendisse posuere arcu diam, id accumsan eros pharetra ac. Nulla enim risus, facilisis bibendum gravida eget, lacinia id purus. Suspendisse posuere arcu diam, id accumsan eros pharetra ac. Nulla enim risus, facilisis bibendum gravida eget.</div>
                            <div class="cart clearfix animate-effect">
                              <div class="action">
                                <ul class="list-unstyled">
                                  <li class="add-cart-button btn-group">
                                    <button class="btn btn-primary icon" data-toggle="dropdown" type="button"> <i class="fa fa-shopping-cart"></i> </button>
                                    <button class="btn btn-primary cart-btn" type="button">Add to cart</button>
                                  </li>
                                  <li class="lnk wishlist"> <a class="add-to-cart" href="detail.html" title="Wishlist"> <i class="icon fa fa-heart"></i> </a> </li>
                                  <li class="lnk"> <a class="add-to-cart" href="detail.html" title="Compare"> <i class="fa fa-signal"></i> </a> </li>
                                </ul>
                              </div>
                              <!-- /.action --> 
                            </div>
                            <!-- /.cart --> 
                            
                          </div>
                          <!-- /.product-info --> 
                        </div>
                        <!-- /.col --> 
                      </div>
                      <!-- /.product-list-row -->
                      <div class="tag new"><span>new</span></div>
                    </div>
                    <!-- /.product-list --> 
                  </div>
                  <!-- /.products --> 
                </div>
                <!-- /.category-product-inner -->
					<?
						}
						listproducts ($result_cat_name['cat_id']);
					}
				}
				echo listproducts();
			?>

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AHMED SAMYownerAsked:
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Leonidas DosasCommented:
What error do you have?Where do you want to set the the data? Did  you try this:
echo listproducts ($result_cat_name['cat_id']); 

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AHMED SAMYownerAuthor Commented:
thanks i closed this question because no answer helped and it related to another problem need to solve them at same time
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