[jQuery] Calling PHP function with $.ajax()

[side1021]

Hi,

Is there any way to call a php function directly with $.ajax()?  I did
some search and the answer I've got varies from impossible to using
workarounds such as passing query string to the 'data' and let php
direct which function to call.  I know that with asp.net it's possible
but i'm not familiar with PHP.  Here is the code that works for me in
asp.net.

          $.ajax({
               type: "POST",
               url: "Default.asp/Book",
               contentType: "application/json; charset=utf-8",
               data: "{}",
               dataType: "json",
               success: AjaxSucceeded,
               error: AjaxFailed
           });


Thanks!