This function return all setting in a array. See below example:
$config = App::Config()->siteInfo();
// Return output
/*
Array
(
[theme] => rainbow
[site_logo] => logo.jpg
[default_pagination] => 15
[time_zone] => Asia/Dhaka
[copy_right_text] => Copy Right [year] [website]
[site_title] => Demo Store
[admin_title] => Demo Store Admin
[admin_email] => reazulk@gmail.com
[currency] => $
[members_redirect_after_login] => /profile
[members_complex_password] => Yes
[rich_text_editor] => Yes
[rich_text_editor_mode] => Simple
[emailsetup_enabled] => Yes
[emailsetup_host] => localhost
[emailsetup_port] => 25
[emailsetup_username] =>
[emailsetup_password] =>
[members_status_after_registration] => AcceptWithoutVerificationLink
[update_manager_history_widget] => No
)
*/
See also: setSiteInfo Setting