function get_current_site() {
    global $current_site;
    return $current_site;
}

USE `database_name`;
UPDATE `wp_options` AS `o1` SET `o1`.`option_value` = REPLACE(`o1`.`option_value`, 'www.old-domain.com', 'www.new-domain.com') WHERE `o1`.`option_name` IN (
    'siteurl',
    'home'
);
UPDATE `wp_options` AS `o2` SET `o2`.`option_value` = REPLACE(`o2`.`option_value`, 'www.old-domain.com', 'www.new-domain.com') WHERE `o2`.`option_name` IN (
    'siteurl',
    'home'
);
UPDATE `wp_posts` AS `p1` SET `p1`.`guid` = REPLACE(`p1`.`guid`, 'www.old-domain.com', 'www.new-domain.com');
UPDATE `wp_2_posts` AS `p2` SET `p2`.`guid` = REPLACE(`p2`.`guid`, 'www.old-domain.com', 'www.new-domain.com');
UPDATE `wp_blogs` AS `b` SET `b`.`domain` = REPLACE(`b`.`domain`, 'www.old-domain.com', 'www.new-domain.com');
UPDATE `wp_site` AS `s` SET `s`.`domain` = REPLACE(`s`.`domain`, 'www.old-domain.com', 'www.new-domain.com');
UPDATE `wp_sitemeta` AS `sm` SET `sm`.`meta_value` = REPLACE(`sm`.`meta_value`, 'www.old-domain.com', 'www.new-domain.com');
UPDATE `wp_usermeta` AS `um` SET `um`.`meta_value` = REPLACE(`um`.`meta_value`, 'www.old-domain.com', 'www.new-domain.com');

define('WP_HOME', 'http://www.old-domain.com');
define('WP_SITEURL', 'http://www.old-domain.com');

replace: "olddomaim.com" with: "newdomain.com"
and > "live run"

replace: "www.domain.com" with: "domain.com"
and > "live run"

replace: "domain.com" with: "www.domain.com"
and > "live run"