...
if ($var[0]->voorgerecht != 0 && $var[0]->nagerecht != 0) {
    if ($var[0]->hoofdgerecht == $var[0]->nagerecht && $var[0]->voorgerecht == $var[0]->hoofdgerecht) {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1,2,3);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } elseif ($var[0]->voorgerecht == $var[0]->hoofdgerecht) {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1,2);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['nagerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(3);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } elseif ($var[0]->hoofdgerecht == $var[0]->nagerecht) {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2,3);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } elseif ($var[0]->voorgerecht == $var[0]->nagerecht) {
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1,3);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } else {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['nagerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(3);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    }

} elseif ($var[0]->nagerecht == 0) {
    if ($var[0]->voorgerecht == $var[0]->hoofdgerecht) {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1,2);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } else {
        if ($res2['voorgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(1);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }
    }

} elseif ($var[0]->voogerecht == 0) {
// Check if same restaurant
    if ($var[0]->hoofdgerecht == $var[0]->nagerecht) {
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2,3);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

    } else {
        if ($res2['hoofdgerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(2);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }

        unset($gerechten);
        if ($res2['nagerecht_status'] == "PENDING") {
            $this->Module->logger->logInfo("Sending mail...");
            $gerechten = array(3);
            unset($renewed_data['gerechten']);
            $renewed_data['gerechten'] = $gerechten;
            $this->Mailer->newMail("RESTAURANT_ORDER_REMINDER", $renewed_data, $var[1][$i]['Email']);
        }
    }
}
...