Action: wu_transition_payment_membership_id

Fires when the membership id of a payment transitions from one value to another.

This hook is fired by BerlinDB when a database UPDATE changes the membership_id column for a payment row.

Parameters

Name	Type	Description
$old_value	`int`	The previous membership id value.
$new_value	`int`	The new membership id value.
$item_id	`int`	The payment ID.