title: Refer jQuery .ajax Post to function
body: <p>Is it possible to refer an AJAX POST to a specific function within a PHP file? </p>
  
  <pre><code>$.ajax({  
       type: "POST",  
       url: "functions.php", //somehow specify function?
       data: "some data...",  
       success: function(){  
            alert('Success!');  
       }  
  });
  </code></pre>
  
  <p>Or is there a way to have functions.php receive data and know what to do with it? If not, are there any other suggestions for getting data over to mySQL (using PHP/jQuery)? Thanks!</p>