How to configure WordPress to work with a new domain?
There are few ways to change the domain name on your WordPress application:
You should change the siteurl and home options in your WordPress database. You can do this using the phpMyAdmin tool available in your cPanel.
Once in phpMyAdmin, select your WordPress database and browse the table wp_options. Find the options siteurl and home and change their values to the new domain you want to use.
Make sure that you clear the cache of your browser and verify if your website is functional.
From the WordPress admin Dashboard
Access your WordPress Dashboard (e.g. http://yourdomain.com/wp-admin) -> Settings -> General.
Under the WordPress address (URL) and the Site address (URL) fields enter the domain that you wish your application to work with and save the changes.
The same modification is valid if you want to add "www" to your domain.
Using WP-CLI over SSH
SiteGround customers can benefit from WP-CLI (WordPress Command line interface) which is installed on their hosting accounts by default.
You need to connect to your hosting server via SSH, navigate to your WordPress installation folder and execute the following commands:
wp db export
This command will create a backup of your database into an SQL file. After that execute:
wp search-replace 'http://olddomain.com' 'http://newdomain.com'
The search-replace command replaces all occurrences of http://olddomain.com with http://newdomain.com in the database of your application. Note that http://olddomain.com is the current domain configured on your WordPress and http://newdomain.com is the new domain that you wish to use.
wp cache flush
This is the last command that you should execute, so you can flush the object cache of your WordPress.
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