New Developer.Authorize.Net Experience

[glharper61]

I cannot get the Hello World to work in PHP.  Can someone help me ?

I get errors regarding jms serializer ... failed to open stream

[RichardH]

Hello @glharper61

There are some dependencies that need to be installed locally before using sample codes. Please take a look at https://github.com/AuthorizeNet/sdk-php/blob/master/README.md and ensure you've followed the installation instructions. You will need composer for installation of all dependencies. 

Richard