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Active OSCommerce/CRELoaded site with authorize.net and Paypal, needs credit card error reporting at check-out for customers who experience such errors while checking out. For example if a transaction fails, the shopping cart should indicate the reason for the failure and suggest alternatives.
Finished product should be able to respond to all user errors as returned by the gateway as well as have defaults. Candidates must have demonstrable experience in working with PHP, MySQL and OSCommerce
Staging/Dev site available for development.