wordpress代码完全禁用头部的X-Pingback链接

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

function deel_setup(){
//阻止站内PingBack
    if( dopt('d_pingback_b') ){
        add_action('pre_ping','deel_noself_ping');
    }
}

// Kill the rewrite rules
add_filter( 'rewrite_rules_array', 'pmg_pk_filter_rewrites' );
function pmg_pk_filter_rewrites( $rules )
{
foreach( $rules as $rule => $rewrite )
{
if( preg_match( '/trackback/?$$/i', $rule ) )
{
unset( $rules[$rule] );
}
}
return $rules;
}
// Kill bloginfo( 'pingback_url' )
add_filter( 'bloginfo_url', 'pmg_pk_kill_pingback_url', 10, 2 );
function pmg_pk_kill_pingback_url( $output, $show )
{
if( $show == 'pingback_url' )
{
$output = '';
}
return $output;
}
// hijack options for pingbacks
add_filter( 'pre_update_default_ping_status', '__return_false' );
add_filter( 'pre_option_default_ping_status', '__return_zero' );
add_filter( 'pre_update_default_pingback_flag', '__return_false' );
add_filter( 'pre_option_default_pingback_flag', '__return_zero' );
// Disable XMLRPC call
add_action( 'xmlrpc_call', 'pmg_pk_kill_xmlrpc' );
function pmg_pk_kill_xmlrpc( $action )
{
if( 'pingback.ping' === $action )
{
wp_die(
__( 'Pingbacks are not supported' ),
__( 'Not Allowed!' ),
array( 'response' => 403 )
);
}
}
// Flush rewrite rules on activation/deactivation so our trackback
// rules disappear or reappear on deactivation.
register_activation_hook( __FILE__ , 'flush_rewrite_rules' );
register_deactivation_hook( __FILE__, 'flush_rewrite_rules' );

UPDATE wp_posts SET ping_status='closed';

//把2016-03-08以前的文章指定ping_status的值为closed
UPDATE wp_posts SET ping_status = 'closed' WHERE post_date < '2016-03-08'

//禁用xmlrpc
add_filter('xmlrpc_enabled', '__return_false');