对所有图像使用相同标题的库：

这里有两种不同的方法可以动态实现这一点，而无需编辑库中每个图像的标题。

如果我们使用自定义属性same_caption 在我们的图库短代码中：

[gallery ids="1120,1123,1119" same_caption="Same Caption ..."]

然后我们可以得到该图库的相同标题。

Before:

After:这由以下插件（PHP 5.4+）独立支持：

插件#1-使用preg_replace():

<?php
/**
 * Plugin Name: Gallery With Same Caption (#1)
 * Description: Support the same_caption gallery attribute.
 * Plugin URL:  http://wordpress.stackexchange.com/a/187938/26350
 * Author:      Birgir Erlendsson (birgire)
 * Version:     0.0.1
 */

add_action( \'init\', function()
{
    add_shortcode( \'gallery\', function( $attr = [], $content = \'\' )
    {
        $output = gallery_shortcode( $attr );
        if( isset( $attr[\'same_caption\'] ) )
        {
            $captiontag = isset( $attr[\'captiontag\'] ) ? tag_escape( $attr[\'captiontag\'] ) : \'dd\';
            $from = "#<{$captiontag}( class=\'wp-caption-text gallery-caption\' )([^>]*)>([^<]*)</{$captiontag}>#";
            $to   = "<{$captiontag}\\\\1\\\\2>" . esc_html( $attr[\'same_caption\'] ) . "</{$captiontag}>";
            $output = preg_replace( $from, $to, $output );
        }
        return $output;
    } );
} );

插件2：使用suppress_filters 还有一些其他挂钩：

<?php
/**
 * Plugin Name: Gallery With Same Caption (#2)
 * Description: Support the same_caption gallery attribute.
 * Plugin URL:  http://wordpress.stackexchange.com/a/187938/26350
 * Author:      Birgir Erlendsson (birgire)
 * Version:     0.0.1
 */

namespace wpse\\birgire;

add_action( \'init\', function()
{
    $o = new GalleryWithSameCaption;
    $o->init();
} );

class GalleryWithSameCaption
{
    private $caption;

    public function init()
    {
        add_filter( 
            \'shortcode_atts_gallery\', 
            [ $this, \'shortcode_atts_gallery\' ], 
            10, 
            3 
        );
    }

    public function shortcode_atts_gallery( $out, $pair, $atts )
    {
        if( isset( $atts[\'same_caption\'] ) )
        {
            $this->caption = $atts[\'same_caption\'];
            add_action( \'pre_get_posts\', [ $this, \'pre_get_posts\' ] );
        }
        return $out;
    }

    public function pre_get_posts( \\WP_Query $q )
    {                                                                
        remove_action( current_action(), __FUNCTION__ );
        $q->set( \'suppress_filters\', false );
        add_filter( \'the_posts\', [ $this, \'the_posts\' ] );
    }

    public function the_posts( $posts )
    {
        remove_filter( current_filter(), __FUNCTION__ );

        return array_map( function( \\WP_Post $post )
        {
            $post->post_excerpt = esc_html( $this->caption );
            return $post;
        }, (array) $posts );
    }

} // end class