Error "Notice: Undefined index:"

Question

Hello! I’m getting this message while trying to display the page.

Notice: Undefined index: Identregator in C: wamp64 www Solus resume_dia.php on line 378

On line 378 I have the following structure.

375- $sqlEntregasRetornos_res = $conn->prepare($sqlEntregasRetornos);
376- $sqlEntregasRetornos_res->execute();        
377- $lstEntregasRet = $sqlEntregasRetornos_res>fetchAll(PDO::FETCH_ASSOC);
378- $teste = $lstEntregasRet["IdEntregador"];                      
379- var_dump($lstEntregasRet);

// Na linha 378 também tentei extrair da seguinte forma     
   $lstEntregasRet["IdEntregador"];

When displaying the contents of the variable it is correctly displaying the information. As below:

array (size=8)
  0 => 
    array (size=3)
      'IdEntregador' => string '4' (length=1)
      'QtdeRetorno' => string '4' (length=1)
      'Descricao' => string 'RETORNO' (length=7)
  1 => 
    array (size=3)
      'IdEntregador' => string '20' (length=2)
      'QtdeRetorno' => string '1' (length=1)
      'Descricao' => string 'RETORNO' (length=7)

The $test variable returns null C: wamp64 www Solus abstract.php:381:null

Honestly, I don’t know what I could be doing wrong, I have four other structures that are working perfectly, I’ve already checked all the information and I don’t know what’s wrong. I had another situation similar to this, but I solved in 2 min, the problem was in the foreach structure, which is not the case now.

Answer 1

In your dump is clearly shown what the problem is. Is that lstEntregasRet is getting ALL query lines.

You have to make a foreach of lstEntregasRet and catch each subarray,

foreach ($lstEntregasRet as $linha)
{
    $IdEntregador = $linha['IdEntregador'];
    ...
}