Admin Users
Admin users, users, or administrators as they are called in Litecart 3.x, are a set of credentials that allows you to sign in to the backend for controlling the store.
Entity Object
$user = new ent_user(); // LiteCart 3.x use ent_administrator()
$user->data['username'] = '...';
$user->set_password('...');
$user->save();
Reference Model
Admin users doesn't have a reference object. Instead, values from the entity will be returned.
echo reference::user($username)->email;
Database Query
$user = database::query(
"select * from ". DB_TABLE_PREFIX ."users
where username = '". database::input($username) ."'
limit 1;"
)->fetch();