Isset does not work

Question

Good afternoon.

I’m making a shared racing web app, like "Uber".

I want you to present a list of registered drivers in the bank on the green carousel.

However, as the image shows, my isset does not seem to be working, it already shows me all connection with bank, and I do not know how to solve.

This is my connection to the bank:

<div>
<? php
    if(isset($_POST['cpf'])){
        echo "<table>";
            echo "<tr>";
                echo "<th>NOME</th>";
                echo "<th>DISPONIBILIDADE</th>";
                echo "<th>CARRO</th>";
                echo "<th>CPF</th>";
                echo "<th>DATA DE NASCIMENTO</th>";
                echo "<th>SEXO</th>";
            echo "</tr>";

            $strcon = mysqli_connect('localhost', 'root', '') or die('Erro ao conectar ao banco de dados');
            mysqli_select_db($strcon, 'uber');
            $sql = "SELECT nome, disponibilidade, carro, cpf, nascimento, sexo FROM tb_motorista WHERE cpf = $_POST[cpf]";
            $resultado = mysqli_query($strcon,$sql) or die("Erro ao retornar dados");

            while ($registro = mysqli_fetch_array($resultado)) {
                $nome = $registro['nome'];
                $disponibilidade = $registro['disponibilidade'];
                $carro = $registro['carro'];
                $cpf = $registro['cpf'];
                $nascimento = $registro['nascimento'];
                $sexo = $registro['sexo'];
                echo "<tr>";
                    echo "<td>".$nome."</td>";
                    echo "<td>".$disponibilidade."</td>";
                    echo "<td>".$carro."</td>";
                    echo "<td>".$cpf."</td>";
                    echo "<td>".$nascimento."</td>";
                    echo "<td>".$sexo."</td>";
                echo "</tr>";
            }
            mysqli_close($strcon);
        echo "</table>";
    }else{
        echo 'Motra a lista de Motoristas';
    }
?>
</div>

The green carousel code, which I put the bank include:

<div class="carousel carousel-slider center" data-indicators="true" style="height: 480px;">
<div class="carousel-fixed-item center">
<a class="btn waves-effect white teal-text darken-text-2">Excluir</a>
</div>
<div class="carousel-item teal white-text" href="#one!">
<h2>Lista de Corridas</h2>
<p class="white-text"><div id="cons_motoca"><?php include("componentes/cons_motoca.php"); ?></div></p>
</div>
</div>

And the index, which has the carousel include:

<?php include("componentes/header.php"); ?>

<div class="row">
<div class="col s4" style="">
    <div class="card">
        <div class="card-tabs">
            <ul class="tabs tabs-fixed-width">
                <li class="tab"><a href="#corridas" style="color: teal">Corridas</a></li>
                <li class="tab"><a href="#motorista" class="active" style="color: teal">Motorista</a></li>
                <li class="tab"><a href="#passageiro" style="color: teal">Passageiros</a></li>
            </ul>
        </div>
        <div class="card-content white lighten-4">
            <?php include("componentes/corrida.php"); ?>
            <?php include("componentes/motorista.php"); ?>
            <?php include("componentes/passageiro.php"); ?>
        </div>
    </div>
</div>
<div class="col s8">
<?php include("componentes/view.php"); ?>
</div>
</div>


<?php include("componentes/footer.php"); ?>

Answer 1

In this file here:

<div>
<? php // <<<<<<<<
    if(isset($_POST['cpf'])){
        echo "<table>";
            echo "<tr>";
                echo "<th>NOME</th>";
//...
</div>

the php opening tag should be

<?php 
    // codigo
?>