隐藏div，如果没有从while循环返回的行PHP

Question

如果没有从MySQL返回的行，我想隐藏类“产品列表”中的div。 我与DIV代码如下：

$sql_product = "select * from `product_detail`"; 
$result_product = $this->db->query($sql_product); 

<div class="table-responsive product-list"> 
    <h5>Product Detail</h5> 
    <table class="table table-striped"> 
     <thead> 
      <tr> 
       <th>Product Name</th> 
       <th>Quantity</th> 
       <th>MRP</th> 
       <th>Amount</th> 
      </tr> 
     </thead> 
     <tbody> 
      <?php 
       while($row = mysqli_fetch_array($result_product)){  
       $product_name = $row['product_name']; 
       $category_name = $row['category_name']; 
       $quantity = $row['quantity']; 
       $product_mrp = $row['mrp'];   
       $amount = $row['amount']; 
      ?> 
      <tr> 
       <th><?php echo $category_name; ?>/<?php echo $product_name; ?></th> 
       <th><?php echo $quantity; ?></th> 
       <th><?php echo $product_mrp; ?></th> 
       <th><?php echo $amount; ?></th> 
      </tr> 
      <?php } ?> 
     </tbody> 
    </table> 
</div> 

Answer 1

只需使用IF语句如下：

<?php 
    $sql_product = "select * from `product_detail`"; 
    $result_product = $this->db->query($sql_product); 

    if ($result_product->num_rows > 0) { ?> 
     <div class="table-responsive product-list"> 
     ... 
     </div> 
    <?php } ?>