File Source for drop

<?php
/**
* @version $Header$
* @package tags
* @subpackage functions
*
* @copyright Copyright (c) 2004-2006, bitweaver.org
* All Rights Reserved. See below for details and a complete list of authors.
* Licensed under the GNU LESSER GENERAL PUBLIC LICENSE. See http://www.gnu.org/copyleft/lesser.html for details.
*/
/**
* required setup
*/
require_once( "../kernel/setup_inc.php" );
require_once( TAGS_PKG_PATH."LibertyTag.php" );
$gBitSystem->verifyPackage( 'tags' );
require_once( LIBERTY_PKG_PATH.'lookup_content_inc.php' );
if (!$gContent || !$gContent->isValid()) {
$gBitSystem->fatalError( 'The content is not valid.' );
}
if (!($gBitUser->hasPermission('p_tags_admin') || $gContent->isOwner())) {
$gBitSystem->fatalError( 'You do not have permission to remove tags.' );
}
if (empty($_REQUEST['tag_id'])) {
$gBitSystem->fatalError('You must select some tags.');
}
if( isset( $_REQUEST["confirm"] ) ) {
$tag = new LibertyTag();
$tag->expungeTags($_REQUEST['content_id'], explode(",", $_REQUEST['tag_id']));
header("location: ".$gContent->getDisplayUrl());
}
$gBitSystem->setBrowserTitle( tra( 'Confirm drop of tags from: ' ).$gContent->getTitle() );
$formHash['tag_id'] = implode(",", $_REQUEST['tag_id']);
$formHash['content_id'] = $_REQUEST['content_id'];
foreach($_REQUEST['tag_id'] as $id) {
$tags[] = $_REQUEST['tag_'.$id];
}
$msgHash = array(
'label' => tra( 'Drop Tags' ),
'confirm_item' => implode("<br>", $tags),
'warning' => tra( 'These tags will be dropped from this content.<br />This cannot be undone!' ),
);
$gBitSystem->confirmDialog( $formHash,$msgHash );
?>

Source for file drop_tags.php