Cara Lengkap dan Ampuh Ganti Domain WP Web

1. tambahkan ini di config:
define('WP_HOME', 'http://' . $_SERVER['SERVER_NAME']);
define('WP_SITEURL', WP_HOME . '/');

2. run di phpmyadmin:
UPDATE wp_posts SET guid = replace(guid, 'oldurl','newUrl');
UPDATE wp_posts SET post_content = replace(post_content, 'oldurl', 'newUrl');
UPDATE wp_links SET link_url = replace(link_url, 'oldurl', 'newUrl');
UPDATE wp_links SET link_image = replace(link_image, 'oldurl', 'newUrl');
UPDATE wp_postmeta SET meta_value = replace(meta_value, 'oldurl', 'newUrl');
UPDATE wp_usermeta SET meta_value = replace(meta_value, 'oldurl', 'newUrl');
UPDATE wp_options SET option_value = replace(option_value, 'oldurl', 'newUrl') WHERE option_name = 'home' OR option_name = 'siteurl';

3. masuk ke menus ganti link di home

4. masuk seting permalink, klik default baru ke link yang dipakai.