if(!isset($_POST['name']) || empty($_POST['name'])){
echo 'Error';

}else if(!isset($_POST['address']) || empty($_POST['address'])){
echo 'Error';
}else{
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "shc";

$name = $_POST['name'];
$address = $_POST['address'];

$order_inf = "";
foreach($_SESSION['cart'] as $key) {
    $order_inf = $order_inf . $key['size']. ' ' . $key['color']." ". $key['quantity'];
}

$conn = new mysqli($servername, $username, $password, $dbname);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

$sql = "INSERT INTO orders (orders, name, address)
VALUES ('$order_inf', '$name', '$address')";

if ($conn->query($sql) === TRUE) {
    echo "Thank you for your purchase.";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();

}