Requête sql (PDO)

Bonjour, je veux savoir comment je peux fermer mon requête php pdo avec $requet->closeCursor();
Voici mon code pour exemple:

$sql_connexion = $bdd->prepare("SELECT * FROM user WHERE email=? AND password=?");
$sql_connexion->execute(array($email, $pass));
$login_check = $sql_connexion->rowCount();
if($login_check > 0)
{
while($row = $sql_connexion->fetch())
{
$id = $row['id'];
$_SESSION['id'] = $id;
$_SESSION['idx'] = base64_encode("g4p3h9xfn8sq03hs2234$id");
$useremail = $row["email"];
$_SESSION['useremail'] = $useremail;
$userpass = $row["password"];
$_SESSION['userpass'] = $userpass;

if($remember == "yes")
{
@setcookie('idCookie', $email, time() + 365*24*3600, null, null, false, true);
@setcookie('passCookie', $pass, time() + 365*24*3600, null, null, false, true);
}
$sql_connexion->closeCursor();
$update_time = $bdd->prepare("UPDATE user SET last_log_date=now() WHERE id=? LIMIT 1");
$update_time->execute(array($id));
print("<script type=\"text/javascript\">location=(\"profile.php?id=$id\");</script>");
$update_time->closeCursor();
}
}

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Merci pour votre aide.