$this->load->library('My_Calendar', $prefs, 'cal');
    
    $data = array(
      3 => array(
        array('link_text' => 'Yahoo', 'link' => 'http://www.yahoo.com')
      ),
      7 => array(
        array('link_text' => 'Google', 'link' => 'http://www.google.com')
      )
    );
    
    $this->data['cal'] = $this->cal->generate('','',$data);
    $this->load->view('head', $this->data);
    $this->load->view('body_schedule', $this->data);
    $this->load->view('foot');

Initializing the update calendar class

CI calendar class init

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PHP