/**
* Connect to the database or return connection instance.
*
* @return PDO Instance of PDO connection
*/
private static function _connect()
{
// do we have an instance already?
if (!self::$instance instanceof PDO) {
try {
// which driver are we using?
switch (strtolower(DB_DRIVER)) {
// MySQL
case 'mysql':
self::$instance = new PDO('mysql:host=' . DB_HOST . ';dbname=' . DB_NAME . ';unix_socket=/var/run/mysqld/mysqld.sock', DB_USER, DB_PASS);
break;
// PostgreSQL (untested)
// PostgreSQL (untested)
case 'pgsql':
self::$instance = new PDO('pgsql:dbname=' . DB_NAME . ';host=' . DB_HOST, DB_USER, DB_PASS);
break;
// SQLite 3 that can only be under BASEPATH
// SQLite 3 that can only be under BASEPATH
case 'sqlite':
self::$instance = new PDO('sqlite:' . BASEPATH . '/' . DB_NAME);
break;
}
// error mode on, throw exceptions
self::$instance->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (PDOException $exception) {
try {
throw new Fari_Exception('Cannot connect to DB: ' . $exception->getMessage() . '.');
} catch (Fari_Exception $exception) {
$exception->fire();
}
}
}
return self::$instance;
}
