This system is fully configurable from a basic minimal system with only an initial billing module and new member module to a sophisticated system with automatic re-billing, automatic member expiration, user cancellation of re-billing, membership type table maintenance at the secure service site and member table maintenance at the member site(s). It will handle unlimited member sites and types of memberships. It has extensive security features including MD5 hash verification and trans id uniqueness of authorize.net transactions and MD5 hash generation and verification to the new member module, IP blocking of excess failed transactions, table driven for membership features (amount, type, duration), AES encryption of re-bill data, and good and bad transaction logging, both in sequential files and in mySql tables. Full system includes authorize.net initial and recurring billing modules, cancel recurring membership modules, member expiration/renewal, membership type table maintenance, and member table maintenance. Full system is available to demo using a test CC number. | 
