Pass information from item to a item display page in PHP - php

Question

OK so I'm doing a web application to sell games.
I've done a cycle to put all the games from the database in the index page.
Now when a user clicks a game it goes to the page with the game's info.
How can I save the info from the database in session variables to use in the other page ?
btw: JOGO = GAME
$stmt = $conn->query('SELECT * FROM JOGO');
foreach ($stmt as $row){
$_SESSION['id_jogo'] = $idJ;
echo '<link href="home/vendor/bootstrap/css/bootstrap.min.php" rel="stylesheet">';
echo '<link href="style.php" rel="stylesheet">';
echo '
<div class="col-lg-4 col-md-6 mb-4" >
<div class="card h-100 ">
<img class="card-img-top" src="http://placehold.it/700x400" alt="">
<div class="card-body">
<h4 class="card-title">
' .$row["nome"].'
</h4>
<h5>' .$row["preco"].'€ </h5>
<p class="card-text">' .$row["descricao"].' </p>
</div>
<div class="card-footer">
<small class="text-muted">Vendedor: </small>
</div>
</div>
</div> ' ;
}
?>

Answer 1

Storing game id in session is not an option. Line
$_SESSION['id_jogo'] = $idJ;
(though I don't know where $idJ comes from), I presume that you want to put game id in session, something like
$_SESSION['id_jogo'] = $row['id']; // assuming id is a primary key.
But this will not work, as this line just overwrites $_SESSION['id_jogo'] on every iteration.
Use standard approach with $_GET parameters, when your page url is itempage.php?game_id=42
In itempage.php you can get game id as $_GET['game_id'] and use it in a query.
So, your markup is something like:
<img class="card-img-top" src="http://placehold.it/700x400" alt="">

Answer 2

Assuming you’re initializing a session somewhere else in your code with session_start() you can create a new session variable name with $_SESSION[‘some_key’] = ‘data’;