Uncaught Argumentcounterror in construction

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I’m trying to list the database data, only when I try to list it returns the error:

Uncaught Argumentcounterror: Too few Arguments to Function processes::__Construct(), 0 passed in

When I declare the variables in $mostra = new processa(*); it returns me the following error:

Undefined variable: name in

My index code:

<div class="container">

    <?php $mostra = new processa($nome, $email, $telefone); 
    $mostra->listaru($conn); 
    if (!empty($mostra)): ?>

        <table class="table">
            <thead class="thead-dark">
                <tr align="center">
                    <th scope="col">Nome</th>
                    <th scope="col">Email</th>
                    <th scope="col">Telefone</th>
                </tr>
            </thead>
            <tbody>
                <?php while ($row = $mostra->fetch_assoc()): ?>
                    <tr>
                        <td>
                            <?= $row['nome'] ?>
                         </td>
                        <td>
                            <?= $row['email'] ?>
                        </td>
                        <td>
                            <?= $row['telefone'] ?>
                        </td>
                    </tr>
                <?php endwhile; ?>
            </tbody>
        </table>

    <?php endif; ?>
</div>

php classes.:

class processa {
    private $nome, $email, $telefone;

    public function __construct($nome, $email, $telefone) {
        $this->nome = $nome;
        $this->telefone = $telefone;
        $this->email = $email;
    }
}

class processa {
    private $nome, $email, $telefone;

    public function __construct($nome, $email, $telefone) {
        $this->nome = $nome;
        $this->telefone = $telefone;
        $this->email = $email;
    }

    public function listaru($conn) {

        $puxar = "SELECT * FROM usuario;";

        return $conn->query($puxar);
    }
}

He comes to show the <thead> table, just does not show the contents of the <tbody>.

php oop function argument

  • in Processa you are required to inform the three arguments in the constructor.

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1 answer

4

The error message already tells you what the problem is, you create a constructor with 3 parameters:

public function __construct($nome, $email, $telefone) {

And calls him with zero arguments:

$user = new processa();

I put in the Github for future reference.

If the function was created with 3 you need to call with 3.

Actually I see other problems in the code, although it works. My recommendation would be not to do OOP until I understand what it is. OOP without understanding only makes the code worse, as is the case. One class is unnecessary, the other is too simple to be a class, and even if you insist on it, the name shows that it is not useful or what it should be.

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