Database class mysqli object oriented

Database

<?php
class Database
{
    public $host = DB_HOST;
    public $username = DB_USER;
    public $password = DB_PASS;
    public $dbname = DB_NAME;
    
    public $link;
    public $error;
    
    /* Constructor */
    public function __construct()
    {
        $this->connect();
    }
    
    /* Conector */
    private function connect()
    {
        $this->link = new mysqli($this->host, $this->username, $this->password, $this->dbname);
        
        if (!$this->link) {
            $this->error = "Failed to connect: " . $this->link->connect_error;
            return false;
        }
    }
}
?>