Error traversing a multidimensional array within a php session

You're making a mess of saving the values in your $_SESSION variable, which works like an array.

For example, you can save the information with a key that identifies it. Apparently what you want is to save within $_SESSION other array (s) with two elements.

A cleaner and more organized solution would be:

• Declare $producto as an array
• Within that array, save two elements, one will be identified by the key id and the other will be identified by the key texto :
• Then you add that array ( $producto ) to your session variable. You can add as many arrays as you need ...
• Then you read the contents of the session variable with a simple foreach , searching for each element by its key.
• If the keys were disparate, but the array keeps the same structure, you can read the information with a foreach nested, as explained in the section Particular case below.

As explained, the code would look like this:

$producto=array();
$vuelta = "hola";
$id=1;

$producto['id']=$id;
$producto['texto']=$vuelta;
$_SESSION['CarroCompra'][]= $producto;


foreach ($_SESSION['CarroCompra'] as $row)
{
    echo "id: {$row['id']} - texto: {$row['texto']}".PHP_EOL;
}

The output on the screen is as follows:

id: 1 - texto: hola

Special case:

If the array for any reason should have different keys, for example, let's imagine that it is filled like this:

$producto=array();
$vuelta = "hola";
$id=1;

$producto['id']=$id;
$producto['texto']=$vuelta;

$vendedor=array();
$vendedor['codigo']="Z-001";
$vendedor['nombre']="Zaqueo";

$_SESSION['CarroCompra'][]= $producto;
$_SESSION['CarroCompra'][]= $vendedor;

You can read like this:

foreach ($_SESSION['CarroCompra'] as $subarray)
{
    if (is_array($subarray))
    {
        foreach ($subarray as $k=>$v)
        {
            echo "$k:  $v ".PHP_EOL;
        }
        echo PHP_EOL;   
    }
}

In this case the output will be similar to this:

id:  1 
texto:  hola 

codigo:  Z-001 
nombre:  Zaqueo 

I think you should put echo $ value [0] to get the $ id and echo $ value [1] to get $ return

I solved it like that, I do not know if it's the right thing to do, but it works ... let's see how it goes:

  for ($i=0; $i <count($_SESSION['CarroCompra']) ; $i++) { 

      for ($j=0; $j <count($_SESSION['CarroCompra'][$i]) ; $j++) { 

          for ($k=0; $k < count($_SESSION['CarroCompra'][$i][$j]); $k++) { 
            echo ($_SESSION['CarroCompra'][$i][$j][$k]) . ' ';
        }
   }

}