protected static $db_pass = DB_PASS;
protected static $db_name = DB_NAME;
/**
* static function to inistalize database object
* @param default var to select to inistalize different dbo
* @return a dbo instance
*/
static function get_instance($type = true)
{
if ($type) {
$instance = new mysqli_db();
} else {
$instance = new pdo_db();
}
return $instance;
}
/**
* above abstract function will be implemented in child class
*/
abstract function connect_db();
abstract function mysql_prep($string);
abstract function confirm_query($result_set);
abstract function count_number_rows($result_set);
abstract function query($query);
abstract function fetch_assoc($result_set);
abstract function free_result($result_set);
abstract function close_connection();
abstract function affected_rows($stmt);
}
$dbo = DBO::get_instance();
//$dbo->connect_db();