So there I was, happily conding my script when all of the sudden I made a few changes to the script and the script failed.

Do you know why I am getting this message? The message that I am getting in my PHP script says:

Fatal error: Call to undefined function hash_hmac() in C:htdocstestscriptsAMAZONaws_signed_request.php on line 66

we are asking for your help becauase we dont know what to do to resolve this issue, we tried looking everywhere for the soltuion. I think i found it but I need your help with SOAP because I have not had much expirience using SOAP only APIs.

Thanks guys for your service.