I have a gateway set up with Barclaycard EPDQ. when the payment I have set up the return to either ACCEPTURL , DECLINEURL , EXCEPTIONURL or CANCELURL. i have been told on these pages i need to
" ePDQ will send back the transaction result parameters and values along with the SHASign ePDQ has created using these parameters and values and the SHA-OUT passphrase set in the ePDQ back office.
You must then take these parameters and values and concatenate them alphabetically appending your SHA-OUT passphrase at the end of each parameter and value – once the you have created the SHASign you must then compare the SHASign you have created with the SHASign ePDQ has created and if they match you can then perform the end of order process such as updating your database etc. "
i have the pages setup and whatever page is called for either accept.php, decline.php, exception.php or cancel.php i can then make the correct ammendments to the DB.
i dont really know where to start, has anyone done this already?
thanks in advance