$idx not incrementing? - Printable Version

Code:
   public function show_qa()

    {

        $content = $this->session->userdata('content_data'); 

        #showArray($content);    

        

        //Get language, version and topic

        $language = $content['subject'];

        $version = $content['version'];

        $topic = $this->uri->segment(3, 0);

        $array_init = $this->uri->segment(4, 0);

        

        //Begin initializing array...

        //do this once only.

        if($array_init == 'init') {

            $this->set_array_container($language, $version, $topic);       //do only once

            reset($this->array_container); //set the array pointer in the very first index which is zero.

            $idx = key($this->array_container);  

            $this->save_idx_position($idx);    

        }

        

        //Begin catch yes or no button

        if (isset($_POST['yes']) || isset($_POST['no'])) {

                #$this->array_container = $this->fetch_array_from_session();

            

                $last_idx = $this->get_last_idx_key();

                $idx = $this->get_idx_position();

                

                if($idx < $last_idx) {

                    $idx++;

                }

                

                $this->save_idx_position($idx);    

                

                $idx = $this->get_idx_position();

            } 

        //End catch yes or no button



        showArray($this->array_container);

        echo '<b>Index position: '. $idx . '</b></br></br>';              

        

        //replace blank space with underscore

        $topic_underscore = str_ireplace(" ", "_", $topic);

        $this->session->set_userdata('topic', $topic_underscore);     



        #get current url and store to session

        $segments = array('language', 'show_qa', $topic_underscore);

        $qa_url = site_url($segments);        

        $this->session->set_userdata('qa_url', $qa_url);     

        

        $this->qa_ids = $this->qa_mdl->get_qa_ids($language, $version, $topic);

        

        #echo '<br>value: '. $current_idx->qa_id;

        

        $this->dryview2($header='templates/header', $msg='Welcome back ', $menu='templates/menu', $content='templates/landing_qa', $footer='templates/footer', $master='templates/landing_master');

    }