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我遇到的问题是我的表格标题位于表格的每个单元格的顶部。

这是一个php文件，它被用来获取数据。

<?php
include 'connect.php';
include_once 'main.php';

if(isset($_POST['submit1'])){
    $s_zone = $_POST['s_zone'];
    $option = $_POST['select_but'];

    if($option === 'Fedex'){
    

    $countrysearch= ['country'];
    $zonesearch= ['zone'];
    $weightsearch= ['weight'];
    $pricesearch= ['price'];

    $find_zone = "SELECT * FROM fedex WHERE zone = '$s_zone'";
    $run_zone = mysqli_query($conn, $find_zone);
    }elseif($option === 'DHL'){

    $countrysearch= ['country'];
    $zonesearch=  ['zone'];
    $weightsearch= ['weight'];
    $pricesearch= ['price'];
    
    $find_zone = "SELECT * FROM dhl WHERE zone = '$s_zone'";
    $run_zone = mysqli_query($conn, $find_zone);
    }

}
?>

这是我的表格布局的HTML代码。

<!-- sesarch for calculator -->
        <div class="calculation">
            <h1>Calculator</h1>
            <form action="" method="POST">
                <div>
                    <label for= "zone"> </label>
                    <input type= "text" class= "input" name="s_zone"  placeholder="search zone" required>
                    <input type= "text" class= "input" name = "stuffweight" placeholder= "weight" required>

                    <select name="select_but" class="dropdown">
                    <option>-Select-</option>

                    <option name="src_fedex">Fedex</option>
                    <option name="src_dhl">DHL</option>
                    </select>

                    <input type= "submit" class= "submit" name="submit1" value="Submit" >
                </div>
                <?php
                     if(isset($_POST['submit1'])){
                        while($row = mysqli_fetch_array($run_zone)){    
                            ?>
                                <table class="t_calcu">
                                    <div>
                                    <tr>
                                        <th>Country</th>
                                        <th>Zone</th>
                                        <th>Weight</th>
                                        <th>Price</th>
                                    </tr>
                                    </div>

                                    <tr>
                                        <td><?php echo $row ['country'] ?></td>
                                        <td><?php echo $row ['zone'] ?></td>
                                        <td><?php echo $row ['weight'] ?></td>
                                        <td><?php echo $row ['price'] ?></td>
                                    </tr>
                                </table>
                            <?php
                            }
                        }
                    ?>

我尝试使用相同的代码布局与其他表，我有。然而，对于这个表，它从我的数据库中“获取”数据。但不幸的是，在使用相同的代码布局后，它仍然不起作用。

<!-- table to show the list of prices and zones that is being inputed -->
    
            <div class="fedex_table">
                <h1>FEDEX List</h1>

                <table class="ft">
                    <div>
                    <tr>
                        <th>Country</th>
                        <th>Zone</th>
                        <th>Weight</th>
                        <th>Price</th>
                    </tr>
                    </div>

                    <tr>
                    <?php
                        while($row = $result->fetch_assoc())
                        {
                    ?>
                        <td><?php echo $row ['country']?></td>
                        <td><?php echo $row ['zone']?></td>
                        <td><?php echo $row ['weight']?></td>
                        <td><?php echo $row ['price']?></td>
                        <td><a href="delete.php ?id=<?php echo $row ["id"];?>">Delete</a></td>

                    </tr>   

                    <?php
                        }
                    ?>
                </table>
            </div>

            <div class="dhl_table">

                <h1>DHL List</h1>
                <table class="dt">
                    <div>
                    <tr>
                        <th>Country</th>
                        <th>Zone</th>
                        <th>Weight</th>
                        <th>Price</th>
                    </tr>
                    </div>

                    <tr>
                    <?php
                        while($row = $resultd->fetch_assoc())
                        {
                    ?>
                        <td><?php echo $row ['country']?></td>
                        <td><?php echo $row ['zone']?></td>
                        <td><?php echo $row ['weight']?></td>
                        <td><?php echo $row ['price']?></td>
                        <td><a href="delete.php ?id=<?php echo $row ["id"];?>">Delete</a></td>

                    </tr>   

                    <?php
                        }
                    ?>
                </table>
            </div>

我所期望的是能够有一个TH“表头”，它停留在表的顶部。