如何在wp_query循环中获取下一篇文章的类别

Question

I need to check if current post in the loop has the same category that the next one.

while($query->have_posts()){
    $query->the_post();
        if(category_of_this_post == category_of_the_next_post) //this
        //do something
    }

Answer 1

A rough setup is the following.

while ( $query->have_posts() ) : $query->the_post();

    $next                 = $query->posts[ $query->current_post + 1];
    $current_categories   = get_the_category();
    $next_post_categories = get_the_category($next->ID);

    if ( /* compare $current_categories  $next_post_categories */ ) {

    }
endwhile;
wp_reset_postdata(); // always reset

A few things to keep in mind:

• You can assign multiple categories, so think about how you want to compare
• On the last post you will get an notice. because it does not exist. Build a check for that.