I have this code in cli.php file:

<?php

include __DIR__ . '/src/Framework/Database.php';

use FrameworkDatabase;

$db = new Database('mysql', [
  'host' => 'localhost',
  'port' => 3306,
  'dbname' => 'phpiggy'
], 'root', '');

$search = "Hats' OR 1=1 -- ";
$query = "SELECT * FROM products WHERE name=?";

$stmt->$db->connection->prepare($query);

$stmt->execute([
  $search
]);

var_dump($stmt->fetchAll(PDO::FETCH_OBJ));

After the command composer run-script phpiggy in the terminal, I should get the empty table. However, I get such warnings:

I can’t see where in this code lies the error that causes the above errors..