可以使用post_gallery 滤器下面是一个完全注释过的示例。

add_filter( \'post_gallery\', \'gallery_custom\', 10, 3 );
/**
 * Filters the default gallery shortcode output.
 *
 * If the filtered output isn\'t empty, it will be used instead of generating
 * the default gallery template.
 *
 * @see gallery_shortcode()
 *
 * @param string $output   The gallery output. Default empty.
 * @param array  $attr     Attributes of the gallery shortcode.
 * @param int    $instance Unique numeric ID of this gallery shortcode instance.
 */
function gallery_custom( $output, $attr, $instance ) {
    // Remove the filter to prevent infinite loop.
    remove_filter( \'post_gallery\', \'gallery_custom\', 10, 3 );

    // Add opening wrapper.
    $return = \'<div class="mydiv">\';

    // Generate the standard gallery output.
    $return .= gallery_shortcode( $attr );

    // Add closing wrapper.
    $return .= \'</div>\';

    // Add the filter for subsequent calls to gallery shortcode.
    add_filter( \'post_gallery\', \'gallery_custom\', 10, 3 );

    // Finally, return the output.
    return $return;
}

英寸gallery_custom(), 移除post_gallery 调用前筛选gallery_shortcode() 否则我们会陷入无限循环。

请注意，输出需要连接到$return. 在原始代码中，$return 持续被覆盖，因为= 使用而不是.= 字符串初始化后。

主输出是使用标准gallery输出功能生成的，gallery_shortcode( $attr ); 我们的筛选器将不会应用于此调用，因为此时已将其删除。

将库输出连接到$return, 我们添加结束HTML标记并添加回过滤器，以便在下次调用gallery shortcode函数时运行它。

// Replace the default [gallery] shortcode function with a custom function.
add_action( \'init\', \'wpse_replace_gallery_shortcode\' ); 
function wpse_replace_gallery_shortcode() {
    remove_shortcode( \'gallery\', \'gallery_shortcode\' );
    add_shortcode( \'gallery\', \'wpse_custom_gallery_shortcode\' );
}

// Customized gallery shortcode function.
// See gallery_shortcode() for documentation.
function wpse_custom_gallery_shortcode( $attr ) {
    $gallery = gallery_shortcode( $attr );

    if ( $gallery ) {
        return \'<div class="mydiv">\' . $gallery . \'</div>\';
    }
} 

要实现这一点，您必须开发更多的自定义代码，如下所示。

function gallery_custom( $output, $attr ) {

    global $post;

    if ( isset($attr[\'orderby\'] ) ) {
        $attr[\'orderby\'] = sanitize_sql_orderby( $attr[\'orderby\'] );
        if ( ! $attr[\'orderby\'] ) {
            unset( $attr[\'orderby\'] );
        }
    }

    extract(shortcode_atts(array(
        \'order\' => \'ASC\',
        \'orderby\' => \'menu_order ID\',
        \'id\' => $post->ID,
        \'itemtag\' => \'dl\',
        \'icontag\' => \'dt\',
        \'captiontag\' => \'dd\',
        \'columns\' => 3,
        \'size\' => \'thumbnail\',
        \'include\' => \'\',
        \'exclude\' => \'\'
    ), $attr ));

    $id = intval( $id );
    if (\'RAND\' == $order ) $orderby = \'none\';

    if ( ! empty( $include ) ) {
        $include = preg_replace(\'/[^0-9,]+/\', \'\', $include);
        $_attachments = get_posts(array(\'include\' => $include, \'post_status\' => \'inherit\', \'post_type\' => \'attachment\', \'post_mime_type\' => \'image\', \'order\' => $order, \'orderby\' => $orderby));

        $attachments = array();
        foreach ($_attachments as $key => $val) {
            $attachments[$val->ID] = $_attachments[$key];
        }
    }

    if ( empty( $attachments ) ) return \'\';

    $output = \'<div class="mydiv">\';

    // Here\'s your actual output, you may customize it to your need
    $output .= "<div class=\'gallery galleryid-$columns gallery-columns-$columns gallery-size-$size\'>";

    // Now you loop through each attachment
    foreach ( $attachments as $id => $attachment ) {
        // Fetch the thumbnail (or full image, it\'s up to you)

        $img = wp_get_attachment_image_src( $id, $size );

        $output .= \'<figure class="gallery-item"><div class="gallery-icon landscape">\';
        $output .= \'<img src="\' . $img[0] . \'" width="\' . $img[1] . \'" height="\' . $img[2] . \'" alt="" />\';
        $output .= \'</div>\';
        if ( $captiontag && trim($attachment->post_excerpt) ) {
            $output .= "
                <{$captiontag} class=\'gallery-caption\'>
                " . wptexturize($attachment->post_excerpt) . "
                </{$captiontag}>";
        }
        $output .= \'</figure>\';
    }

    $output .= \'</div></div>\';

    return $output;
}

add_filter( \'post_gallery\', \'gallery_custom\', 10, 2 );