how to change localhost URL in WordPress

Use the following sql commands in phpmyadmin

UPDATE wp_options SET option_value = 'http://new-domain-name.com' WHERE  option_name = 'home';

UPDATE wp_options SET option_value = 'http://new-domain-name.com' WHERE option_name = 'siteurl';

UPDATE wp_posts SET post_content = REPLACE(post_content,'http://old-domain-name.com','http://new-domain-name.com');

UPDATE wp_posts SET guid = REPLACE(guid,'http://old-domain-name.com','http://new-domain-name.com');