Using civicrm_contact_create() setting greeting is not consistent with address

email_greeting_display and postal_greeting_display do not follow the expected usage of address_display. Setting those values when calling civicrm_contact_create() does not update the greetings. Instead, you have to use email_greeting_custom and postal_greeting_custom.

The following does not return an error or set the address display correctly in the web interface.

$params = array('contact_type' => 'Organization', 'organization_name' => 'Happy Corp', email_greeting_display => 'Dear Ruthless Corporation');
$contact =& civicrm_contact_create($params);
if ($contact->is_error == 1)

{ print_r($contact); }

Instead, use _custom even though addressee_display does not work this way.

$params = array('contact_type' => 'Organization', 'organization_name' => 'Happy Corp', email_greeting_custom => 'Dear Ruthless Corporation');
$contact =& civicrm_contact_create($params);
if ($contact->is_error == 1) { print_r($contact); }

Hard to say if this is a bug in the web interface or a simple inconsistency in the API.