function getAllProducts() { $conn = new mysqli("localhost", "username", "password", "database"); $sql = "SELECT * FROM products"; $result = $conn->query($sql); if ($result->num_rows > 0) { while($row = $result->fetch_assoc()) { $products[] = $row; } return $products; } else { return null; } }This code creates a function that connects to a database and retrieves all products using a SELECT statement. It then returns an array of all the products. In terms of package/library, this code uses the mysqli extension in PHP, which is a library for interacting with MySQL databases.