Can someone explain what the section of code defining the function __construct below does?
PHP Code:
class userAuth {
    
// define properties
    
private $username;
    private 
$passwd;
    private 
$passwdFile;

    
// constructor
    // must be passed username and non-encrypted password
    
public function __construct($username$password) {
            
$this->username $username;
            
$this->passwd $password;
    }