PHP的while循环插入MySQL

Question

i want to get datas from a mySQL table and want to insert every row (that my query get) into another table.

With following code i get my Datas:

$cart = new Dbconn();
$query = new Dbconn();
if ($cart->pdo()) {
   $cart->stmt("SELECT id, product FROM cart WHERE uid =:uid");
   $cart->bindParam(':uid', Session::get('uid'));
   $cart->exe();
}

After i get the data i want to insert it, with a while loop

while ($rowPay = $cart->fetch()) {
    if ($query->pdo()) {
       $query->stmt('INSERT INTO orders (products_id, order_id) VALUES(:uid, :products)');
       $query->bindParam(':user_id', Session::get('uid'));
       $query->bindParam(':products', $rowPay['product']);
       $query->exe();
    }
}

He get all Datas but insert only the first entry. Where is my mistake?

Greetings

Answer 1

If it insert only the first entry, then there is a problem with the parameters you try to insert. You probably try to insert several rows with the same primary key. I need to know where is the primary key in each table in order to help you more.

Answer 2

$payCart->fetch() fetches single row and $payCart->fetchAll() fetches all rows.

Try as this

while ($rowPay = $payCart->fetchAll(PDO::FETCH_ASSOC)) {
       if ($query->pdo()) {
           $query->stmt('INSERT INTO orders'
                       .'(products_id, order_id)'
                       .'VALUES(:uid, :products)');
           $query->bindParam(':user_id', Session::get('uid'));
           $query->bindParam(':products', $rowPay['product']);
           $query->exe();}}