SQLite/PDO - No errors when connecting to not-existing .db

I use XAMPP with

• PHP Version 5.4.7
• PDO drivers - mysql, sqlite - enabled
• SQLite Library - 3.7.7.1 - enabled
• sqlite3 - SQLite3 module version - 0.7 - enabled
• sqlite3.extension_dir - no value - no value
• API Extensions - mysql,mysqli,pdo_mysql

So, if I understood well some tutorials, that's all I need to be able to start working.

So, in C:\xampp\htdocs\my_project I copied database.db file (sakila downloaded from here: http://ift.tt/1gUPNBc )

Then I created index.php that looks like this:

<?php

try {
    $db = new PDO('sqlite:./database.db');
    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch(Exception $e) {
    echo 'Error: ';
    echo $e->getMessage();
    die();
}

and when I run this there are no errors. As you can see, my path is /database.db. If I change it to just

$db = new PDO('sqlite:.database.db');

no errors. Or without dot:

$db = new PDO('sqlite:database.db');

or absolute path - there are no errors.

Even worse, if I put wrong not existing .db name:

$db = new PDO('sqlite:daaaaaaaaaaaatabase.db');

also - there are no errors.

Can you tell me what am I doing wrong?

With all of the above paths I've tried the following:

$results = $db->query('select * from film');
var_dump($results);
die();

and I get "General error: 1 no such table", but the database.db has that table (I installed sqlite, opened that database in command line and checked - the database.db is OK).