AMP_Post_Template::build_post_featured_image PHP Метод

    private function build_post_featured_image()
    {
        $post_id = $this->ID;
        $featured_html = get_the_post_thumbnail($post_id, 'large');
        // Skip featured image if no featured image is available.
        if (!$featured_html) {
            return;
        }
        $featured_id = get_post_thumbnail_id($post_id);
        // If an image with the same ID as the featured image exists in the content, skip the featured image markup.
        // Prevents duplicate images, which is especially problematic for photo blogs.
        // A bit crude but it's fast and should cover most cases.
        $post_content = $this->post->post_content;
        if (false !== strpos($post_content, 'wp-image-' . $featured_id) || false !== strpos($post_content, 'attachment_' . $featured_id)) {
            return;
        }
        $featured_image = get_post($featured_id);
        list($sanitized_html, $featured_scripts, $featured_styles) = AMP_Content_Sanitizer::sanitize($featured_html, array('AMP_Img_Sanitizer' => array()), array('content_max_width' => $this->get('content_max_width')));
        $this->add_data_by_key('featured_image', array('amp_html' => $sanitized_html, 'caption' => $featured_image->post_excerpt));
        if ($featured_scripts) {
            $this->merge_data_for_key('amp_component_scripts', $featured_scripts);
        }
        if ($featured_styles) {
            $this->add_data_by_key('post_amp_styles', $featured_styles);
        }
    }