PHP / SQLite - Copying a table from disk to memory

Question

I have a sqlite3 database on my harddrive (file.db) with 5 tables. I\'d like to copy 3 of these tables to an in-memory database (:memory:).

Is there a simple way to

Answer 1

If you need a small database for tests, you may export your databse to an SQL file and then execute it as a single query in PHP:

class EphemeralPDO extends \PDO {
  public function __construct() {
    parent::__construct('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
    $queries = file_get_contents(__DIR__ . '/database.export.sql');
    $this->exec($queries);
  }
}