注入到form中

function paymentCreate($uid, $amount, $finish_callback, \PaymentMethod $payment_method = NULL) {$payment_method = $payment_method ? $payment_method : new \PaymentMethodUnavailable;if($payment_method instanceof \PaymentMethodUnavailable) {$payment_method_id = 4;$entities = entity_load('payment_method', array($payment_method_id));$payment_method = reset($entities);}$payment = new \Payment(array('currency_code' => 'HKD','description' => 'This is the payment description','finish_callback' => $finish_callback,'method' => $payment_method,'uid' => $uid,));$payment->setLineItem(new \PaymentLineItem(array('name' => 'Donation','amount' => $amount,//'tax_rate' => 0.1,)));return $payment;
}function xxx_form($form, &$form_state) {$payment = paymentCreate(1, $total, 'xxx_finish_callback');$form = payment_form_standalone($form, $form_state, $payment);$form['#submit'][] = 'xxx_form_submit';
}function xxx_form_submit($form, &$form_state) {// set paymentif (isset($form_state['values']['payment_status'])) {/** @var Payment $payment */$payment = $form_state['payment'];dpm($payment->pid); // payment item id}
}function xxx_finish_callback(Payment $payment) {if(payment_status_is_or_has_ancestor($payment->getStatus()->status, PAYMENT_STATUS_SUCCESS)) {drupal_set_message(t('Thank you'));drupal_goto('<front>');} else {drupal_set_message(t('Your payment failed.'));drupal_goto('<front>');}
}

直接支付

$payment = paymentCreate(1, $total, 'xxx_finish_callback');
entity_save('payment', $payment);
dpm($payment->pid);
$payment->execute(); // payment redirect