Filters the subscription data that is sent to the payment gateway.
- $subscription_data (array) - Array of subscription data, including the following:
- price (float) - Base initial price to be paid today (excluding signup fees).
- recurring_price (float) - Recurring payment amount.
- discount (float) - Total amount of discounts applied towards the payment.
- discount_code (string) - Discount code that was used during registration.
- fee (float) - Total fee(s) applied towards the initial price.
- length (int) - Numerical length of the subscription.
- length_unit (string) - Length unit (i.e. "day", "month", "year").
- subscription_id (int) - ID of the subscription level they're signing up for.
- subscription_name (string) - Name of the subscription level they're signing up for.
- key (string) - RCP subscription key.
- user_id (int) - ID of the WP user account that's making the registration.
- user_name (string) - Login name of the WP user account that's making the registration.
- email (string) - Email of the user that's making the registration.
- currency (string) - Currency code that's being used for the registration (i.e. "USD").
- auto_renew (bool) - Whether or not auto renew is enabled for this registration.
- return_url (string) - URL to redirect to after a successful signup.
- new_user (bool) - Whether or not a new user account was created for this registration.
- trial_duration (int) - Numerical length of the trial (or 0 if none).
- trial_duration_unit (string) - Trial unit (i.e. "day", "month", "year").
- trial_eligible (bool) - Whether or not the user is eligible to signup for a free trial (if not, they should be charged the subscription price immediately).
- post_data (array) - Array of all data submitted through the registration form.