A complete DB/JSON backend

<?php
include './db.inc';
include 
'./db_twits.inc';

$twits = new twits;

header("Content-type: application/json");

switch(
$_REQUEST['action']) {
  case 
'remove_old':
    
$twits->remove_old($query,$_SERVER['REQUEST_TIME']-(14*24*3600));
    echo 
json_encode('update'=>'Old tweets have been removed');
    break;
}
?>