Which Integration Solution Is Best For Simple Payment Form?

[consultant]

So I found it odd that there's no PHP example for using SIM.  

We send invoices (via PDF attachment in an email) to customers.  We want the customer to be able to submit payment just by clicking a link or button.  We don't need to show the invoice details (they can look at the PDF).  We want to make this as simple as possible with the least amount of work and complexity, avoiding installing SSL certs, etc.  

It seems SIM is the way to go.  Yet (a) there's no PHP example for using SIM that I could find except that of what other users have posted and (b) Authorize.net says they are no longer recommending SIM.

Well regarding (b) I ask WHY and more important for our objectives, what is the suitable replacement method and where is the PHP example?

Thanks in advance for any help on this.

[RaynorC1emen7]

did you find the sim_guide here?

http://developer.authorize.net/api/upgrade_guide/

[Lilith]

@consultant It is true that we're deprecating SIM, and we expect to have the replacement integration method released by or before September.

SIM doesn't work via email, so you would need to have an intermediary link on your site that generates the Hosted Payment Form. The email could then use that link.

As @RaynorC1emen7 pointed out, the SIM Guide is still available. Here's a direct link:

http://www.authorize.net/support/SIM_guide.pdf