你可以使用get_posts 并搜索图像附件。

<?php
$images = get_posts(array(
    \'post_parent\'    => $the_parent_to_check, // whatever this is
    \'post_type\'      => \'attachment\', // attachments
    \'post_mime_type\' => \'image\', // only image attachments
    \'post_status\'    => \'inherit\', // attachments have this status
));

if($images)
{
     // has images
}
else
{
     // no images. :(
}

要测试帖子是否有图库，请编写一个小助手函数：

function has_gallery( $post = NULL )
{
    if ( ! is_null( $post ) )
        $post = get_post( $post );

    if ( ! $post )
    {
        if ( ! isset ( $GLOBALS[\'post\'] ) )
            return FALSE;

        $post = $GLOBALS[\'post\'];
    }

    return FALSE !== strpos( $post->post_content, \'[gallery\' );
}

if ( has_gallery() ) 
{
    // do something
}