How can I set my variable "u"?

Question

How can I set my variable "u"?

Asked 5 years ago

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The following error is appearing: Notice: Undefined variable: u in C: Webserver Apache2.2 htdocs posts register.php on line 30 Fatal error: Call to a Member Function connect() on a non-object in C: Webserver Apache2.2 htdocs posts register.php on line 30

I tried in some ways to solve the problem, but it’s not working, as I can solve?

<html lang="pt-br" >
  <head>
  <title>Projeto Login</title>
  <meta charset="UTF-8" />
  <link rel="stylesheet" href="css/login.css" />
  </head>
  <body>
    <div id="corp-form" >
    <form method="POST" >
      <h1>Cadastrar</h1>
      <input type="text" name="nome" placeholder="Nome completo" maxlength="30" />
      <input type="email" name="email" placeholder="Usuário" maxlength="30" />
      <input type="password" name="senha" placeholder="Senha" maxlength="16" />
      <input type="password" name="confSenha" placeholder="Confirmar a senha" maxlength="16" />
      <input type="submit" name="submit" value="Cadastrar" />
    </form>
    </div>
    <?php
    date_default_timezone_set('America/Sao_Paulo');
    if(isset($_POST['nome']))
    {
      $nome = $_POST['nome'];
      $email = addslashes($_POST['email']);
      $senha = addslashes($_POST['senha']);
      $confirmarSenha = addslashes($_POST['confSenha']);
      //verificar se esta preenchido
      if(!empty($nome) && !empty($email) && !empty($senha)
      && !empty($confirmarSenha))
      {
        $u->conectar("projeto_login","localhost","root","");
        if($nome->msgErro == "")
        {
          if($senha == $confirmarSenha)
        {
        if($u->cadastrar($nome,$email,$senha))
        {
            echo "Cadastrado com sucesso! Acesse para entrar.";
          }
          else
          {
              echo "Email já cadastrado!";
          }
        }
        else
        {
          echo "Senha e confirmar senha não correspondem!";
        }
      }
      else
      {
          echo "Erro: ".$u->msgErro;
        }
      }else
      {
          echo "Preencha todos os campos!";

    }
  }
     ?>
  </body>
</html>

From what I understand my variable "u" is not defined, I have defined in other ways, but it did not work.

where you declared the "u", I see neither include from another file nor her statement

– João Vitor

2019/12/12 at 14:21
Along with that part $name = $_POST['name']; $email = addslashes($_POST['email']); $password = addslashes($_POST['password']); $confirm = addslashes($_POST['confNow']); I declared it as a set of all these, but it failed. I did not declare it in this code because apparently I am not able to declare it correctly.

– Mikael

2019/12/12 at 14:22
Has no variable declaration $u in your code. It is in some external file?

– João Vitor

2019/12/12 at 14:25
@Joãovitor I set it in my index.php <?php date_default_timezone_set('America/Sao_paulo'); require_once 'CLASSES/usuarios.php'; $u = new Usuario; ? > <html lang="en" > <head> <title>Project Login</title> <meta charset="UTF-8" /> <link rel="stylesheet" href="css/login.css" /> </head>

– Mikael

2019/12/12 at 14:30

2 answers

1

<?php
//...
require_once 'CLASSES/Usuario.php';
$u = new Usuario();
//...
?>
<html>
...
</html>

Make sure that in the User.php class you really have it class name Usuario{...

I did this and discovered more errors in my users.php Notice: Use of undefined constant name - assumed 'name' in C:\WebServer\Apache2.2\htdocs\mensagens\CLASSES\usuarios.php on line 13 Warning: PDO::__construct(): [2002] Nenhuma conex�o p�de ser feita porque a m�quina de destino as recusou ativamente. (trying to connect via tcp://localhost:3306) in C:\WebServer\Apache2.2\htdocs\mensagens\CLASSES\usuarios.php on line 13 Notice: Trying to get property of non-object in C:\WebServer\Apache2.2\htdocs\mensagens\CLASSES\usuarios.php on line 13 Notice: Trying to get property of non-object in

– Mikael

2019/12/12 at 15:51
But, thank you, apparently solved my current.

– Mikael

2019/12/12 at 15:52
The database connection is not working so you are not able to create the object, always try to protect your code with if(isset()) or is_null, or something like this when there is query in the database and there is possibility that the record does not exist, bd connection or unavailability errors.

– Guilherme Lagemann

2019/12/12 at 15:54

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by Ravin Mor • 25 points · Answer 1 · 2019-12-12T14:30:17+00:00

It seems you did not include the class, consequently you did not urge the same. Try the following:

<?php
     require('diretório/da/classe.php');
     u = new Classe;
  ?>    
  <html lang="pt-br" >
      <head>
      <title>Projeto Login</title>
      <meta charset="UTF-8" />
      <link rel="stylesheet" href="css/login.css" />
      </head>
      <body>
        <div id="corp-form" >
        <form method="POST" >
          <h1>Cadastrar</h1>
          <input type="text" name="nome" placeholder="Nome completo" maxlength="30" />
          <input type="email" name="email" placeholder="Usuário" maxlength="30" />
          <input type="password" name="senha" placeholder="Senha" maxlength="16" />
          <input type="password" name="confSenha" placeholder="Confirmar a senha" maxlength="16" />
          <input type="submit" name="submit" value="Cadastrar" />
        </form>
        </div>
        <?php
        date_default_timezone_set('America/Sao_Paulo');
        if(isset($_POST['nome']))
        {
          $nome = $_POST['nome'];
          $email = addslashes($_POST['email']);
          $senha = addslashes($_POST['senha']);
          $confirmarSenha = addslashes($_POST['confSenha']);
          //verificar se esta preenchido
          if(!empty($nome) && !empty($email) && !empty($senha)
          && !empty($confirmarSenha))
          {
            $u->conectar("projeto_login","localhost","root","");
            if($nome->msgErro == "")
            {
              if($senha == $confirmarSenha)
            {
            if($u->cadastrar($nome,$email,$senha))
            {
                echo "Cadastrado com sucesso! Acesse para entrar.";
              }
              else
              {
                  echo "Email já cadastrado!";
              }
            }
            else
            {
              echo "Senha e confirmar senha não correspondem!";
            }
          }
          else
          {
              echo "Erro: ".$u->msgErro;
            }
          }else
          {
              echo "Preencha todos os campos!";

        }
      }
         ?>
      </body>
    </html>

So you can access the class objects. Test this and tell me what you’ve returned.

By the way, you can exchange require() for include().