$checkout = new Checkout();
$cadastros = new Cadastros();
if (isset($_POST) && !empty($_POST)) {
    if (isset($_POST['notificationCode']) && !empty($_POST['notificationCode'])) {
        $transaction_id = anti_injection($_POST['notificationCode']);
        $content = $checkout->CheckNotification($transaction_id);
        /////////// INICIA VERIFICAÇÃO DE CRÉDITO ///////////
        $transaction_info = $vendas->getRegistro($content->code);
        if ($transaction_info['vnd_venda_entregue'] == '0') {
            if ($transaction_info['vnd_produtos_id'] == '0') {
                $cnt_credit = $transaction_info['vnd_item_count'];
            } else {
                $info = $produtos_info->getRegistro($transaction_info['vnd_produtos_id']);
                $cnt_credit = $info['pro_produto_credit'];
            }
            if ($cadastros->CheckCreditExists($transaction_info['vnd_accounts_id'])) {
                $cnt_credit_act = $cadastros->GetCreditCount($transaction_info['vnd_accounts_id']);
                $cnt_credit = $cnt_credit + $cnt_credit_act;
                $result = $cadastros->UpdateCredit($transaction_info['vnd_accounts_id'], $cnt_credit);
                if ($result) {
                    $vendas->UpdateEntregue($content->code);
                }
            } else {
                $result = $cadastros->AddCredit($transaction_info['vnd_accounts_id'], $cnt_credit);
                if ($result) {
                    $vendas->UpdateEntregue($content->code);
                }
            }
        }
        /////////// TERMINA VERIFICAÇÃO DE CRÉDITO ////////////
        $checkout->VerifyTransaction($content);