function vote()
{
if (isset($_GET['dir']) && isset($_GET['did'])) {
$d = new Diff();
if ($d->populateDiff($_GET['did'])) {
if ($_GET['dir'] == 1 || $_GET['dir'] == -1) {
$db = new DB();
$db->query("SELECT * FROM `rating` WHERE `did` = '{$_GET['did']}' AND `uid` = '{$_SESSION['uid']}';");
if ($db->numRows() == 0) {
$db->query("INSERT INTO `rating` (`did`, `uid`, `rating`) VALUES ('{$_GET['did']}', '{$_SESSION['uid']}', '{$_GET['dir']}');");
} else {
$db->query("UPDATE `rating` SET `rating` = '{$_GET['dir']}' WHERE `did` = '{$_GET['did']}' AND `uid` = '{$_SESSION['uid']}';");
}
$db->close();
}
}
}
}