Resolve undifined index [closed]

First of all, the structure of your table should be as follows:

CREATE TABLE 'bdreghoras' (
  'ID' INT NOT NULL AUTO_INCREMENT,
  'PROCESSO' VARCHAR(50) NOT NULL,
  'DATA' DATE NOT NULL,
  'UTILIZADOR' VARCHAR(2) NOT NULL,
  'DESCRICAO_TAREFA' VARCHAR(250) NOT NULL,
  'HORA_INICIO' TIME NOT NULL,
  'HORA_FIM' TIME NOT NULL,
  'DURACAO_TAREFA' VARCHAR(5) NOT NULL,
  'PEDENTES' VARCHAR(50) NOT NULL,
  'LOCAL' VARCHAR(50) NOT NULL);

Then you should change your PHP script as follows:

// ...
while($row = mysqli_fetch_array($sqldata, MYSQLI_ASSOC)) {
    echo "<tr>";
    echo "<td>" . $row['PROCESSO'] . "</td>";
    echo "<td>" . $row['DATA'] . "</td>";
    echo "<td>" . $row['UTILIZADOR'] . "</td>";
    echo "<td>" . $row['DESCRICAO_TAREFA'] . "</td>";
    echo "<td>" . $row['HORA_INICIO'] . "</td>";
    echo "<td>" . $row['HORA_FIM'] . "</td>";
    echo "<td>" . $row['DURACAO_TAREFA'] . "</td>";
    echo "<td>" . $row['PENDENTES'] . "</td>";
    echo "<td>" . $row['LOCAL'] . "</td>";
    echo "</tr>"; 
}
echo "</table>";

Undefined Index

This error occurs when you try to access a nonexistent index from an array. This error is very common with beginners using Query String. The famous example:

<?php
$pag = $_GET['pag'];
?>

If there is no "pag" variable in the URL, it will give this error:

  

PHP Notice: Undefined index: pag in test.php on line 2

To avoid this error, always make sure the index exists. The isset function easily solves this problem:

if ( isset( $_GET['pag'] ) )
{
    $pag = $_GET['pag'];
}
else
{
    $pag = 'valor padrão';
}

The code can be rewritten in the following way, using the Ternary Conditional Operator:

$pag = isset( $_GET['pag'] ) ? $_GET['pag'] : 'valor_padrao';

YOUR PROBLEM:

  

NEVER USE SPACES , NOR ACCENTS AND PREFERENCE WITHOUT BOX FOR COLUMN TITLES OF YOUR TABLE.

You have DESCRIÇÃO TAREFA, PENDENTES, DURAÇÃO TAREFA that are not being found in the variables:

...                   POR QUE???????

            //Erro de Acento na hora da conversão
            echo"<td>" . $row['DESCRIÇÃO TAREFA'] . "</td>";

            //No banco ta PEdente
            echo "<td>" . $row['PENDENTES'] . "</td>";

            //Erro de Acento na hora da conversão
            echo "<td>" . $row['DURAÇÃO TAREFA'] . "</td>";
..

Hello,

First, it indicates that you do not use accents, cedilla, and spaces in your database for best practices.

To solve this problem, give var_dump($row) within the while loop to see how the fields are being returned, then update the indexes.

This error: Notice: Undefined index: PENDENTES in C:\xampp\htdocs\reghoras\index.php on line 29 is related to the typing error, its field in the database is named as pedentes and not peNdentes .

Regarding the other errors, try running this line of code before the query so that the database is in the utf-8 format.

mysqli_query($dbcon, "SET CHARSET UTF8");

Abs.