Charging

The main methods implemented by gateways are:

• purchase($options) - authorize and immediately capture an amount on the customer’s card
• completePurchase($options) - handle return from off-site gateways after purchase

On-site gateways do not need to implement the completePurchase method, and will throw BadMethodCallException if called.

When calling the completeAuthorize or completePurchase methods, the exact same arguments should be provided as when you made the initial authorize or purchase call (some gateways will need to verify for example the actual amount paid equals the amount requested). The only parameter you can omit is card.