public function sum($return_amount = true)
{
$sid = $this->app->user_manager->session_id();
$different_items = 0;
$amount = floatval(0.0);
$get_params = array();
$get_params['order_completed'] = 0;
$get_params['session_id'] = $sid;
$get_params['no_cache'] = true;
$sumq = $this->app->database_manager->get($this->table, $get_params);
if (is_array($sumq)) {
foreach ($sumq as $value) {
$different_items = $different_items + $value['qty'];
$amount = $amount + intval($value['qty']) * floatval($value['price']);
}
}
$modify_amount = $this->app->event_manager->trigger('mw.cart.sum', $amount);
if ($modify_amount !== null and $modify_amount !== false) {
if (is_array($modify_amount)) {
$pop = array_pop($modify_amount);
if ($pop != false) {
$amount = $pop;
}
} else {
$amount = $modify_amount;
}
}
if ($return_amount == false) {
return $different_items;
}
return $amount;
}