helper

<?Php

function userid($id){
    try{
        include 'dbcon.php';

        $sql = 'SELECT * FROM users where id = :id';
        $s = $pdo->prepare($sql);
        $s->bindValue(':id', $id);
        $s->execute();
    }catch (PDOException $e){
        $error = 'Error fetching id: ' . $e->getMessage();
        include 'error.php';
        exit();
    }
    $id = $s->fetch();
    return $id[0];
}

?>