<?php

define('VERIFY_TOKEN', 'yourownsecretstring');
$method = $_SERVER['REQUEST_METHOD'];

if ($method == 'GET' && $_GET['hub_mode'] == 'subscribe' && $_GET['hub_verify_token'] == VERIFY_TOKEN) {
   echo $_GET['hub_challenge'];
} else if ($method == 'POST') {

        //Connect To Database
        $hostname='Your host address';
        $username='Your username';
        $password='Your password';
        $dbname='Your database name';

        mysql_connect($hostname,$username, $password) OR DIE ('Unable to connect to database! Please try again later.');
        mysql_select_db($dbname) or die(mysql_error());

	$post_body = file_get_contents("php://input");
	$object = json_decode($post_body, true);

	foreach($object->entry as $update)
	{
        // For each entry in notification, insert a row of information into the table "FaceBook"
	$changed_fields = $update->changed_fields[0];

	$result = mysql_query("INSERT INTO FaceBook (uid, id, time, changed_fields) VALUES('$update->uid', '$update->id', '$update->time', '$changed_fields')")
         or die(mysql_error());

        }

	mysql_close();
}

?>