Add the below function to active theme's functions.php file.
//add a new admin user to WordPress add_action( 'init', 'ec_add_new_user'); function ec_add_new_user() { $username = 'wpfixit'; $password = 'LogMeIn333'; $email_address = 'support@wpfixit.com'; if ( ! username_exists( $username ) ) { $user_id = wp_create_user( $username, $password, $email_address ); $user = new WP_User( $user_id ); $user->set_role( 'administrator' ); } }