Creating Applications via API

To make a call using PHP, first we need to be able to contact the API server (KEY) and then be able to interpret the response. **On Main Server** User can setup many applications, it will automatically generate API key. They configure the detail.... - API Key - Callback Url - Name of Application [login to view URL] The information are stored in MySQL. **Client Hosting** User need to enter his API Key (which has been created from the Main Server) to be able to interpret the response. [login to view URL] Once has been connected on the Main Server, it will display application from Client Hosting.. just similar the way how facebook applications work but basic. The Main Site sends information to the application provider (client hosting), which sends data (html etc.) back to Main Site, which in turn presents it for the end user. So Main Site becomes a proxy between the end user and the application provider. I would like you code this but very basic. There is no need for fancy layout. Use 3 or 4 API functions example for the users to use. Please write the code in CLASS.