function fill_with_random_data()
{
    $gen = new LoremIpsumGenerator('lorem.txt');
    $iterations = 10;
    $rows_per_iteration = 10000;
    $connection = db_connect();
    while ($iterations--) {
        $query = "INSERT INTO goods (`name`, `description`, `price`, `imgurl`) VALUES ";
        for ($i = 0; $i < $rows_per_iteration; $i++) {
            $item = [];
            $item['name'] = ucfirst(trim($gen->get_sentence()));
            $item['description'] = trim($gen->get_paragraph());
            $item['price'] = rand(1, 10000000) / 100;
            $item['imgurl'] = get_random_img_name();
            $query .= "('{$item['name']}', '{$item['description']}', '{$item['price']}', '{$item['imgurl']}')";
            if ($i + 1 != $rows_per_iteration) {
                $query .= ",";
            }
        }
        $result = mysqli_query($connection, $query);
        if (!$result) {
            die('query error: ' . mysqli_error($connection));
        }
    }
}