No.
Tieni conto che non è un codice scritto da me...
Da quello che ho potuto capire viene prelevato il codice html dell'articolo, e verificare se esiste all'interno un tag che identifica un'iimmagine.

Se non c'è nessuna immagine viene formattato l'articolo di anteprima mettendo un'immagine di default altrimenti fa un tot di elaborazioni....ti allego il pezzo di codice incriminato..

Codice PHP:
    //echo $article->sectionid.' '.$article->catid.'$$$
';
    $have_images = preg_match_all("|<[\s\v]*img[\s\v][^>]*>|Ui", $plg_entrytext, $plg_matches, PREG_PATTERN_ORDER) > 0;
    //$have_images = false;
    if (!$have_images && $fp_used_default_image && in_array($view[0],$viewtype)){
        $fp_default_img = '[img]'.$fp_default_image.'[/img]';
        $plg_entrytext .= $fp_default_img;
        $plg_matches[0][] = $fp_default_img;
        $have_images = TRUE;
        //$plg_matches[0][0] = $fp_default_img;
    }
    if ($have_images)    
    {
            $imagesxxx = 0;
            //if($ar_remove_link && $view[0] == 'a') $plg_entrytext = preg_replace('@<a (.*?)>(.*?)<\\/a>@s', '$2', $plg_entrytext);
            
            $this->remove_linked_image($ar_remove_link && $view[0] == 'a', $excluded_images,$plg_entrytext);
          foreach ($plg_matches[0] as $plg_match) 
          {
            //echo htmlspecialchars($plg_match)."
";
            //echo $option.' '.$view.'
';
            //$num_articles = count($plg_matches[0]);
            // full link of image: [img]..[/img]
            //$viewtype assigned to array('f','c','s')
            if(in_array($view[0],$viewtype)) {//frontpage, catblog, sectionblog
                $showbottext = $this->plg_images_resize2($plg_match,$fp_width,$fp_height,$quality, $fp_frcolor, $fp_bocolor, $widthm ,$heightm);
                $showbottext = $this->remove_imagelink_info($showbottext,'width',$widthm);
                $showbottext = $this->remove_imagelink_info($showbottext,'height',$heightm);
                $showbottext = $this->change_imagelink_info($showbottext,'align',$fp_align);
                $showbottext = $this->remove_imagelink_info($showbottext,'hspace',$fp_hspace);
                $showbottext = $this->remove_imagelink_info($showbottext,'vspace',$fp_vspace);
                $showbottext = $this->change_imagelink_info($showbottext,'style','width:'.$widthm.'px; '.
                'height:'.$heightm.'px; margin:'.$fp_vspace.'px '.$fp_hspace.'px;');
                $showbottext = $this->change_imagelink_info($showbottext,'border','0');
                if($fp_remove_class)$showbottext = $this->remove_imagelink_info($showbottext,'class');
                
                if($fp_image_link) {      //$article->slug, $article->catslug, $article->sectionid
                    $link   = JRoute::_(ContentHelperRoute::getArticleRoute(@$article->slug, @$article->catslug, @$article->sectionid.":testset"));
                    $showbottext = '[url="'.$link.'"]'.$showbottext.'[/url]';
                }
                $imagesxxx = $imagesxxx + 1;
                if($imagesxxx == 1) $showbottext2 = $showbottext;
                if($imagesxxx > 1) $showbottext = '';
 
            }
            elseif($view[0] == 'a' && $sized_img_article) {//Article
                $showbottext = $this->plg_images_resize($plg_match,$ar_width,$ar_height,$quality, $widthm ,$heightm, $originallink);
                $showbottext = $this->change_imagelink_info($showbottext,'width',$widthm);
                $showbottext = $this->change_imagelink_info($showbottext,'height',$heightm);
                $showbottext = $this->change_imagelink_info($showbottext,'align',$fp_align);
                $showbottext = $this->change_imagelink_info($showbottext,'hspace',$fp_hspace);
                $showbottext = $this->change_imagelink_info($showbottext,'vspace',$fp_vspace);
                if($ar_remove_img_tag)
                foreach($ar_remove_img_tag as $tag ) $showbottext = $this->remove_imagelink_info($showbottext,$tag);
            } else return ;

            //echo "$$$$".htmlspecialchars($showbottext)."
";
            //$originallink
            if($ar_link2originalimage && $view[0] == 'a'){
                        //$findme   = 'download.gif';
                        $pos = false;
                        if($excluded_images) 
                            foreach ($excluded_images as $findme) 
                                if($findme) $pos = $pos || strpos($originallink, $findme);
                        //$pos = strpos((string)$originallink, $findme);
                        if ($pos === false) {
                            $plg_entrytext = str_replace( $plg_match, '[url="'.$originallink.'"]'.$plg_match.'[/url]', $plg_entrytext);
                        }
                    //$plg_entrytext = str_replace( $plg_match, '[url="'.$originallink.'"]'.$plg_match.'[/url]', $plg_entrytext);
                    }
            $plg_entrytext = str_replace( $plg_match, $showbottext, $plg_entrytext);    
          }