Sorun ne ? (PHP)

<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Video extends Public_Controller{
    public function __construct()
    {
        parent::__construct();
        $this->load->model('comments_model');
    }
    function index($cat_sef='',$video_sef='')
    {
    	$data = $this->_data;


    	if(($data['video'] = $this->videos->get_video($cat_sef, $video_sef)) === FALSE){
    		show_404();
    	}

        $data['config'] = $this->alp->change_****($data['config'], $data['video']['general']);
        $data['config']['image'] = poster_thumb_url($data['video']['imageH'], $data['video']['imageV']); // header image
        $data['page_name'] = 'video';
        $data['autoloadvideo'] = TRUE;

        $data['video']['parts'] = PartHtmlParser(@$data['video']['parts']);

        // 18 age control and verification
        if($data['video']['18age'] == 1 && isset($data['config']['login']) && empty($data['config']['birthday']) && $data['video']['parts']['default_part_name'] !='trailer' && !is_null($data['video']['parts']['default_part_name'])){
            $data['user_enter_age'] = TRUE;
            $data['autoloadvideo'] = FALSE;
        }
        elseif($data['video']['18age'] == 1 && isset($data['config']['login']) && birthday($data['config']['birthday']) < 18 && $data['video']['parts']['default_part_name'] !='trailer' && !is_null($data['video']['parts']['default_part_name'])){
            $data['autoloadvideo'] = FALSE;
            $data['user_18_down'] = FALSE;
        }
        elseif($data['video']['18age'] == 1 && !get_cookie('18age') && !isset($data['config']['login']) && $data['video']['parts']['default_part_name'] !='trailer' && !is_null($data['video']['parts']['default_part_name'])){
            $data['visitor_accept_age'] = TRUE;
            $data['autoloadvideo'] = FALSE;
        }
        $data['video']['vote'] = videocontrolCookie($data['video']['video_id']);
        $data['seasons'] = $this->categories_model->get_seasons($data['video']['category_id']);

        $data['episodes'] = $this->videos->get_episodes($data['video']['category_id'],&$data['seasons'],'alp',$data['video']['season_id']);

        $data['link'] = link_prev_next($data['episodes'],$data['video']['season_id'],$data['video']['video_id'],$data['video']['cat_sef_uri']);


		$data['categories'] = $this->videos->get_categories();
		$data['comments'] = $this->comments_model->get_video_comments($data['video']['video_id']);
        $data['discussion_topics'] = $this->comments_model->get_video_discussion_topics($data['video']['category_id']);
        $data['selected_main_category'] = $data['video']['main_category'];
        $data['selected_category'] = $data['video']['category_id'];
        if(isset($data['config']['login'])){
            $this->db->cache_off();
            $data['user_watched_list'] = $this->users_model->get_user_watched_list($data['config']['user_id']);
        }
        $data['video_types'] = $this->config->item('video_types');

    	$this->display('video', $data);
    }

    function discussion($topic_id){
        $data = $this->_data;
        $this->load->library('form_validation');
        $this->db->cache_off();
        $this->form_validation->set_rules('content', 'lang:discussion_content', 'required|xss_clean');
        if ($this->form_validation->run() && isset($data['config']['login'])){
            
            $this->comments_model->insert_discussion_msg($topic_id, $data['config']['user_id'], auto_typography($this->input->post('content')));
        }

        if(($data['topic'] = $this->comments_model->get_discussion($topic_id)) === FALSE){
            show_404();
        }
        $data['categories'] = $this->videos->get_categories();

        $data['config']['image'] = poster_thumb_url($data['topic']['imageV'],$data['topic']['imageH']); // header image

        $data['config'] = $this->alp->change_****($data['config'], $data['topic']['subject'].' - '.$data['topic']['title']);

        $this->display('discussion', $data);
    }
}