<?php
/** 
 * Delete all tags for a given content object
 */
 
//allow only the app owner to delete tags from any object
if (! XN_Profile::current()->isOwner()) {
    $signInUrl = XN_Request::signInUrl();
    echo 'Not allowed <a href="'.$signInUrl.'" >Sign in</a> if you are the owner of this app.';
    die();
}
?>
<form action="" method="POST">
    Object Id:<input type="text" name="object_id"/>
    <input type="submit" value="Delete All Tags"/>
</form>
<?php

if ($_SERVER['REQUEST_METHOD'] == 'POST') {
    $content = XN_Content::load($_REQUEST['object_id']);
    $tagQuery = XN_Query::create('Tag');
    $tagQuery->filter('content','=', $content);
    $tagsQueryResults = $tagQuery->execute();
    $tags = array();
    foreach($tagsQueryResults as $tag){
        //add quotes tothe tags to ensure the full value is considered
        $tags[] = '"'.$tag->value.'"';;
    }
    $tagString = implode(', ',$tags);
    echo '<p>Content '.$content->id.' had the following tags: '.htmlentities($tagString).'</p>';
    XN_Tag::deleteTags( $content , $tagString);
    echo "<p>They are history.</p>";
}

?>