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I am programming a page in php and I am with the following doubt I made a Insert in my database and created a <table> the inside of it are being displayed my data that would be the code:
 <table id="tb1" class="display" cellspacing="0">
            <thead> 
                <tr> 
                    <th>id</th>
                    <th>Produto</th>
                    <th>valor</th>
                    <th>data</th>
                    <th>apagar</th>
                </tr> 
            </thead> 
            <tbody id="tbody">
                <?php
                    include ('conection/config.php');
                    $conn = mysqli_connect ($varBDhostname,$varBDusername,$varBDpassword,$varBDdatabase);
                    $result = mysqli_query($conn,'SELECT *FROM tbl_produtos') or die(mysqli_error());
                    while ($row = mysqli_fetch_assoc($result)){
                 ?>
                <tr>
                    <td><?php echo $row["id"]?></td>
                    <td><?php echo $row["nome"]?></td>
                    <td><?php echo $row["valor"]?></td>
                    <td><?php echo $row["dh"]?></td>
                </tr>
                <?php } ?>
            </tbody>
        </table>
my connections are working normally however I would need to put a column that contains a delete button only my doubt and the next one I should make a new connection because I realized my tag <tr> is inside while doing select so I don’t know where the delete would be and I should take advantage of the same table at least is what I think could do these write 
I made this delete and here:
<header class="header">
        <form action="conection/inserir.php" method="post" id="form">
            <h1>Inserir Produtos</h1>
            <input type="text" name="nome" id="produto" placeholder="Produto" maxlength="30" required/>
            <input type="number" name="valor" id="valor" placeholder="valor" maxlength="10" required/>
            <input type="submit" value="cadastrar" name="cadastro">
        </form>
        <?
            include ('conection/config.php');
            $conn = mysqli_connect ($varBDhostname,$varBDusername,$varBDpassword,$varBDdatabase);
            if(isset($_GET['deletar'])): 
                $id = $_GET['deletar'];
                $delete = mysqli_query($conn,'DELETE FROM tbl_produtos WHERE id = {$id}') or die(mysqli_error());
                    if($delete):
                        echo "Registro removido";
                        endif;
            endif;
            ?>
        <table id="tb1" class="display" cellspacing="0">
            <thead> 
                <tr> 
                    <th>id</th>
                    <th>Produto</th>
                    <th>valor</th>
                    <th>data</th>
                    <th>apagar</th>
                </tr> 
            </thead> 
            <tbody id="tbody">
                <?php
                    $result = mysqli_query($conn,'SELECT *FROM tbl_produtos') or die(mysqli_error());
                    while ($row = mysqli_fetch_assoc($result)){
                 ?>
                <tr>
                    <td><?php echo $row["id"]?></td>
                    <td><?php echo $row["nome"]?></td>
                    <td><?php echo $row["valor"]?></td>
                    <td><?php echo $row["dh"]?></td>
                    <td><a href="?deletar=<?php echo $row["id"]?>">Deletar</a></td>
                </tr>
                <?php } ?>
            </tbody>
        </table>


Connection is done only once at the top of the page. No need to re-call the file.
tdwith LINK to delete.– Diego Souza
when Voce speaks link will be a href
– Felipe Henrique
Exactly.
<a href="deletar.php?cod=<?php echo $row['id']?"> Deletar </a>– Diego Souza
@Kirito I posted an answer. Note that I entered the connection at the top of the file and drew up a href so that you can find the registry ID and delete it as the id passed.
– Sr. André Baill