Why is JSON not saved to the database?

Question

PHP

#Order.php

class Order
{
  public static function save($name, $email, $phone, $userId, $comments, $products)
  {
    $db = Db::getConnection();

    $products = json_encode($products);
    echo $products;

    $sql = 'INSERT INTO orders (name, email, phone, user_id, comments, products ) '
                	. 'VALUES (:name, :email, :phone, :user_id, :comments, :products)';
         
    $result = $db->prepare($sql);
    $result->bindParam(':name', $name, PDO::PARAM_STR);
    $result->bindParam(':email', $email, PDO::PARAM_STR);
    $result->bindParam(':phone', $phone, PDO::PARAM_STR);
    $result->bindParam(':user_id', $userId, PDO::PARAM_STR);
    $result->bindParam(':comments', $comments, PDO::PARAM_STR);
               //Если вместо $products поставить к примеру переменную $id равную 1,
                  то запись сохраняется
    $result->bindParam(':products', $products, PDO::PARAM_STR);


    return $result->execute();
  }
}


#CartController.php

if (isset($_POST['order_btn'])) {
  $phone = $_POST['phone'];
  $address = $_POST['address'];
  $name = $_POST['name'];
  $email = $_POST['email'];
  $comments = $_POST['comments'];

  $errors = false;

  if (!User::checkPhone($phone)) {
    $errors[] = 'Invalid phone';
  }

  if (!User::checkName($name)) {
    $errors[] = 'Invalid Name';
  }

  if (!User::checkEmail($email)) {
    $errors[] = 'Invalid Email';
  }

  if ( $errors == false ) {
    $productsInCart = Cart::getProducts();
          
    if ( User::isGuest() ) {
      $userId = false;				
    } else {
      $userId = User::checkLogged();
    }

    $result = Order::save($name, $email, $phone, $userId, $comments, $productsInCart);
    if ( $result ) {
      Cart::clear();
    }

Answer 1

What is the field size? Does it contain your meaning?
Try the TEXT field type, where you want to store the products in the database.

Answer 2

Look for errors in the logs
Check the contents of variables
Check the request with your hands from the console or from phpmyadmin
Think with your head