How to remove feeds from WordPress totally?

Question

I want to completely remove feeds from WordPress. I am using this little function from http://wpengineer.com/287/disable-wordpress-feed/

/**
* disable feed
*/
function fb_disable_feed() {
wp_die( __('No feed available,please visit our <a href="'. get_bloginfo('url') .'">homepage</a>!') );
}
add_action('do_feed', 'fb_disable_feed', 1);
add_action('do_feed_rdf', 'fb_disable_feed', 1);
add_action('do_feed_rss', 'fb_disable_feed', 1);
add_action('do_feed_rss2', 'fb_disable_feed', 1);
add_action('do_feed_atom', 'fb_disable_feed', 1);

Still there is tons of transient options.. like _transient_feed_mod or _transient_timeout_feed_mod

How can i completely remove feeds from WordPress?

Answer 1

First step: remove the feed links from the section of your site.

<?php
add_action( 'wp_head', 'wpse33072_wp_head', 1 );
/**
 * Remove feed links from wp_head
 */
function wpse33072_wp_head()
{
    remove_action( 'wp_head', 'feed_links', 2 );
    remove_action( 'wp_head', 'feed_links_extra', 3 );
}

Next up, let's remove the feed endpoints from WP. Hook into init, globalize $wp_rewrite then set the feeds to an empty array. This effectively stops WordPress from adding feed rewrites. It's also super hackish and will probably break at some point in the future.

<?php
add_action( 'init', 'wpse33072_kill_feed_endpoint', 99 );
/**
 * Remove the `feed` endpoint
 */
function wpse33072_kill_feed_endpoint()
{
    // This is extremely brittle.
    // $wp_rewrite->feeds is public right now, but later versions of WP
    // might change that
    global $wp_rewrite;
    $wp_rewrite->feeds = array();
}

But, if it breaks, that's okay, because we'll redirect feeds to the home page.

<?php
foreach( array( 'rdf', 'rss', 'rss2', 'atom' ) as $feed )
{
    add_action( 'do_feed_' . $feed, 'wpse33072_remove_feeds', 1 );
}
unset( $feed );
/**
 * prefect actions from firing on feeds when the `do_feed` function is 
 * called
 */
function wpse33072_remove_feeds()
{
    // redirect the feeds! don't just kill them
    wp_redirect( home_url(), 302 );
    exit();
}

And the last step: an activation hook to set our rewrite feeds to an empty array and flush the rewrite rules.

<?php
register_activation_hook( __FILE__, 'wpse33072_activation' );
/**
 * Activation hook
 */
function wpse33072_activation()
{
    wpse33072_kill_feed_endpoint();
    flush_rewrite_rules();
}

All that as a plugin.

Answer 2

The code you posted will do exactly what it says it will - prevent anyone from accessing your site via an RSS feed.

Still there is tons of transient options.. like _transient_feed_mod or _transient_timeout_feed_mod

These transient options have absolutely nothing to do with your site feed. The WordPress dashboard consumes several feeds by default and displays them in boxes on the admin dashboard. Plugins you install might add their own feeds, either for news displays or for updates.

These transient values are used by WordPress to determine when these consumed feeds have been updated.

How can i completely remove feeds from WordPress?

The code you've posted already has ...

Answer 3

This should do it

/*disable rss*/
remove_action('wp_head', 'feed_links', 2 );
add_filter('post_comments_feed_link','bfr_disable_comments_feeds');
function bfr_disable_comments_feeds() {
    return null;
}

Better yet, if you have at least PHP 5.3 you can use a shorter version:

/*disable rss, PHP 5.3+ */
remove_action('wp_head', 'feed_links', 2 );
add_filter('post_comments_feed_link',function () { return null;});

Removing rewrites, on the other hand, would take a lot longer, so unless you're totally nuts about performance you can leave them there.