How to disable internal pingbacks in WordPress

You have probably noticed that when you link to a post on the same site you will get a pingback on the old post with a link to your new post. If you for whatever reason wants to get rid of those internal pingbacks, simply put the following code snippet in your functions.php. Note that you will still get pingbacks from other sites.

function disable_internal_pingbacks( &$links ) {
	$home = get_option( 'home' );
	foreach ( $links as $l => $link )
		if ( 0 === strpos( $link, $home ) )
			unset($links[$l]);
}

add_action( 'pre_ping', 'disable_internal_pingbacks' );

If you don’t like writing or adding code to your functions.php, you can instead install the No Self Pings plugin from WordPress plugin directory.