Php Redux框架：获取图像库标题

我需要得到所有图片的标题，我上传到画廊与redux

这是具有redux框架的主题选项中的代码：

我试图在WordPress网站上显示标题，该代码仅用于测试：

<?php 
    $attachmentIds = explode(',', $redux_demo['opt-gallery']);
    foreach($attachmentIds as $attachmentId): 
        $metaAttachment = wp_get_attachment_metadata( $attachmentId );
        echo '<pre>';
        print_r( $metaAttachment );
        echo '</pre>';
?>

但是，此代码返回我[caption]=>空

function wp_get_attachment( $attachment_id ) {
    $attachment = get_post( $attachment_id );
    return array(
        'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
        'caption' => $attachment->post_excerpt,
        'description' => $attachment->post_content,
        'href' => get_permalink( $attachment->ID ),
        'src' => $attachment->guid,
        'title' => $attachment->post_title
    );
}

---

标题字段有一个值，但redux似乎没有保存信息，或者我的代码错误？

这是我一直在寻找的解决方案：

在functions.php文件中：

在模板文件中：

我希望有帮助！：-

function wp_get_attachment( $attachment_id ) {
    $attachment = get_post( $attachment_id );
    return array(
        'alt' => get_post_meta( $attachment->ID, '_wp_attachment_image_alt', true ),
        'caption' => $attachment->post_excerpt,
        'description' => $attachment->post_content,
        'href' => get_permalink( $attachment->ID ),
        'src' => $attachment->guid,
        'title' => $attachment->post_title
    );
}

<?php 
    global $redux_demo;
    $myGalleryIDs = explode(',', $redux_demo['opt-gallery']);
    foreach($myGalleryIDs as $myPhotoID):
        $photoArray = wp_get_attachment($myPhotoID);
    ?>
        <a href="<?php echo wp_get_attachment_url( $myPhotoID ); ?>" class="lightbox" title="<?php echo $photoArray[caption]; ?>">
            <img src="<?php echo wp_get_attachment_url( $myPhotoID ); ?>" class="img-rounded" alt="<?php echo $photoArray[title]; ?>">
    </a>
<?php endforeach; ?>