關閉Pingback給自己

functions.php

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