Gazelle/sections/bookmarks/remove.php

<?php
authorize();

if (!Bookmarks::can_bookmark($_GET['type'])) {
	error(404);
}

$Type = $_GET['type'];

list($Table, $Col) = Bookmarks::bookmark_schema($Type);

if (!is_number($_GET['id'])) {
	error(0);
}

$DB->query("
	DELETE FROM $Table
	WHERE UserID = '".$LoggedUser['ID']."'
		AND $Col = '".db_string($_GET['id'])."'");
$Cache->delete_value("bookmarks_$Type"."_$UserID");

if ($Type === 'torrent') {
	$Cache->delete_value("bookmarks_group_ids_$UserID");
} elseif ($Type === 'request') {
	$DB->query("
		SELECT UserID
		FROM $Table
		WHERE $Col = '".db_string($_GET['id'])."'");
	$Bookmarkers = $DB->collect('UserID');
	$SS->UpdateAttributes('requests requests_delta', array('bookmarker'), array($_GET['id'] => array($Bookmarkers)), true);
}