갤러리 단축 코드에서 이미지 제목 / alt 속성 가져 오기

(다른 사용자 지정 중에서) WordPress 내에서 이미지 갤러리를 사용자 지정할 수 있도록 PHP를 코딩하는 방법을 배우려고합니다.

내가 가지고있는 코드는 양식화 된 갤러리 페이지에 적합하지만 WP 갤러리 내에서 이미지의 제목 및 대체 속성을 가져 오는 방법을 파악하는 데 어려움을 겪습니다 ( 이미지가 갤러리 기능에 있기 때문에 게시물의 첨부 파일로 보이지 않기 때문입니다.

갤러리에 WP 내장 기능을 사용하고 싶기 때문에 WP 갤러리를 사용하고 싶습니다.

어떤 도움을 주시면 감사하겠습니다 ... 이것이 가장 멍청한 일입니까,아니면 무엇입니까?

참고 : 이전 첨부 파일에서 WP 갤러리를 사용하지 않을 때 페이지에서 이미지를 편집하려고 할 때get_attachment 또는get_children도 비참했습니다. 페이지에서 제거 된 하위 항목이 여전히 표시됩니다.) .

 <?php if (have_posts()): while (have_posts()) : the_post(); ?>

<div class="gallery-wrapper three-cols clearfix">

  <?php // image gallery content 
    if( has_shortcode( $post->post_content, 'gallery' ) ) {   

       // Add a filter for full gallery size:
       add_filter( 'shortcode_atts_gallery','wpse_full_size_gallery' );


$gallery = get_post_gallery_images( $post->ID );

       // Remove the filter:
       remove_filter( 'shortcode_atts_gallery','wpse_full_size_gallery' );  

foreach ( $gallery as $image_url ) {
        $alt = get_post_meta($attachment->ID, '_wp_attachment_image_alt', true);
            $image_title = $attachment->post_title;


            echo '<div class="one-third columns gallery-item">';
            echo '<div class="item-picture" data-type="image">';
            echo '<img src="' . $image_url . '">' ;
            echo '<div class="image-overlay">';
            echo '<a href="' . $image_url . '" data-rel="prettyPhoto[gallery]"><span class="zoom"></span></a>';
             echo '</div>';
             echo '<span class="item-label">' . $image_title . '</span>';
             echo '</div>';
             echo '</div>';

        }

}                         
?>

  </div>
        <!-- article -->
        <article class="full-width columns" id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
            <br class="clear">

            <?php edit_post_link(); ?>

        </article>
        <!-- /article -->

    <?php endwhile; ?>

    <?php else: ?>

        <!-- article -->
        <article>

            <h2><?php _e( 'Sorry, nothing to display.', 'html5blank' ); ?></h2>

        </article>
        <!-- /article -->

        <?php endif; ?>            
 

I am trying to learn how to code php so that I can customize the image gallery within WordPress (among other customizations).

The code I have works great for a stylized gallery page, but having a difficult time trying to figure out how to get the title and alt attributes of the images within the WP gallery (I am guessing it's because the images are not seen as attachments to the post since they are in the gallery function).

And I would like to use the WP gallery, as I want to use that WP built-in functionality for galleries.

any help is appreciated... is this the dumbest way of doing something or what?

Note: get_attachment or get_children has been disastrous too when trying to edit images on a page when NOT using the WP gallery in that old attachments or children that have been removed from the page still show up).

<?php if (have_posts()): while (have_posts()) : the_post(); ?>

<div class="gallery-wrapper three-cols clearfix">

  <?php // image gallery content 
    if( has_shortcode( $post->post_content, 'gallery' ) ) {   

       // Add a filter for full gallery size:
       add_filter( 'shortcode_atts_gallery','wpse_full_size_gallery' );


$gallery = get_post_gallery_images( $post->ID );

       // Remove the filter:
       remove_filter( 'shortcode_atts_gallery','wpse_full_size_gallery' );  

foreach ( $gallery as $image_url ) {
        $alt = get_post_meta($attachment->ID, '_wp_attachment_image_alt', true);
            $image_title = $attachment->post_title;


            echo '<div class="one-third columns gallery-item">';
            echo '<div class="item-picture" data-type="image">';
            echo '<img src="' . $image_url . '">' ;
            echo '<div class="image-overlay">';
            echo '<a href="' . $image_url . '" data-rel="prettyPhoto[gallery]"><span class="zoom"></span></a>';
             echo '</div>';
             echo '<span class="item-label">' . $image_title . '</span>';
             echo '</div>';
             echo '</div>';

        }

}                         
?>

  </div>
        <!-- article -->
        <article class="full-width columns" id="post-<?php the_ID(); ?>" <?php post_class(); ?>>
            <br class="clear">

            <?php edit_post_link(); ?>

        </article>
        <!-- /article -->

    <?php endwhile; ?>

    <?php else: ?>

        <!-- article -->
        <article>

            <h2><?php _e( 'Sorry, nothing to display.', 'html5blank' ); ?></h2>

        </article>
        <!-- /article -->

        <?php endif; ?>