Question

I want to update a database field when a user presses the Facebook Like button.

A small snippet of my code below. I’ve simplified it, so plz don’t start about the errors/bad practices 😉

<?php
    function updateLike () {
        mysql_query("UPDATE like SET liked = '1'");
    }
?>

<script>
     FB.Event.subscribe('edge.create', function(response) {
         <?php updateLike() ?>
     });
</script>

So, that doesn’t work. I’ve read something about making an AJAX call but I couldn’t find a good example for my situation.

Who can push me in the right direction?

Answer 1

Yes, you can update db using ajax

Script

     FB.Event.subscribe('edge.create', function(response) {

         // ajax call  
         $.post('server.php', function(data) {

         });
     });

server.php

You can do update or whatever the server process

 mysql_query("UPDATE like SET liked = '1'");

You can get easy make ajax call easily using jQuery.