I created a mobile app and PHP toolkit server. My mobile app communicates to PHP toolkit server and PHP server Communicates with Salesforce server to retrieve and update the records?

I'm planning to submit my app to AppExchange. Do Salesforce accepts Client app as well as PHP Server app? Can I submit my PHP Toolkit server to AppExchange?  

Any ideas or suggestions are appreciated.

-Vinay 

Hi,

Recently I have added "token" provided by salesforce.com. so rthat any of our client (professional/enterprise) can use integration.

IT seems one of the client (professinoal edition) cannot use this integration

I am getting this error:

"API_DISABLED_FOR_ORG: API is not enabled for this Organization "

What will be the possibility for this error:

1>Do we need to setup something on client salesforce account

2>some problem with token

3>some problem with code???

Thanks

Nupur