幻灯片脚本前端获取函数（更新）

function fetch_slider_images($slider_id) {
    $slider_data = get_post_meta($slider_id, 'custom_slider', true);
    $images = array();

    if (!empty($slider_data) && is_array($slider_data)) {
        foreach ($slider_data as $slide) {
            if (!empty($slide['id'])) {
                $image_url = wp_get_attachment_image_url($slide['id'], 'full');
                if ($image_url) {
                    $images[] = array(
                        'url' => $image_url,
                        'title' => isset($slide['title']) ? $slide['title'] : '',
                        'caption' => isset($slide['caption']) ? $slide['caption'] : '',
                        'link' => isset($slide['link']) ? $slide['link'] : ''
                    );
                }
            }
        }
    }

    return $images;
}