Hi
I am used this following code for Create contact

$debtor_contact_handle = $client->DebtorContact_Create(array(
'debtorHandle' => $newDebtorHandle,
'name' => "Sample"))->DebtorContact_CreateResult; //CUSTOMERNAME

$client->Debtor_SetAttention(array(
'debtorHandle' => $newDebtorHandle,
'valueHandle' => $debtor_contact_handle)); //CONTACT
}

Then I have not idea
how to update contact?