public function setUsername($username) {
        $this->username = $username;
        if ($this->session !== null) {
            $this->session->set('username', $username);
        }
    }
public function setUsername($username) {
        $this->username = $username;
        if ($this->session !== null) {
            $this->session->set('username', $username);
        }
    }
public function setUsername ( $ username ) { $ this -> username = $ username ; if ( $ this -> session !== null ) { $ this -> session -> set ( 'username' , $ username ) ; } }
Set the username.

@param string $username
Set the username .