add_action('save_post', 'wpjam_save_post_notify_baidu_zz', 10, 3);
function wpjam_save_post_notify_baidu_zz($post_id, $post, $update){
if($post->post_status != 'publish') return;

//請到百度站長后臺獲取你的站點的專屬提交鏈接
$baidu_zz_api_url = 'http://data.zz.baidu.com/urls?site=網站域名&token=token';

$response = wp_remote_post($baidu_zz_api_url, array(
'headers' => array('Accept-Encoding'=>'','Content-Type'=>'text/plain'),
'sslverify' => false,
'blocking' => false,
'body' => get_permalink($post_id)
));
}