My checkout button has disappeared when I go to check out to go to Authorize.net. Why?
Call to undefined function mhash()
This means that the mhash scripts are not enabled. They may have recently updated your server and didn't enable it. If you contact your hosting provider they should be able to enable MHASH and that will fix the issue.
I just got off the phone with GoDaddy. The said that because I'm running PHP 5.4, the MHASH is no longer available. They suggested that I fix the code because it's outdated (according to them) and then my button will appear again. I've enabled "QuickHash" in version 5.4 and still no luck. Any help that you could provide so that I can get my button back, so that people can order stuff again would be greatly appreciated.
All the Best,