什么时候in_same_term 中的参数get_next_post() / get_previous_post() 函数设置为TRUE时，将从分配给当前职位的任何类别中选择职位。

正如您所写，您不能使用exclude 本例中的参数。

使用get_{$adjacent}_post_where 过滤器，您可以跳过product 在类别列表中，您正在查找帖子。首先获取分配给当前帖子的类别ID，然后从列表中删除不需要的ID，最后替换查询字符串中“where”语句的相关部分。

add_filter( \'get_next_post_where\', \'se337397_adjacent_from_category\', 15, 5 );
add_filter( \'get_previous_post_where\', \'se337397_adjacent_from_category\', 15, 5 );

function se337397_adjacent_from_category( $where, $in_same_term, $excluded_terms, $taxonomy, $post )
{
    if ( $in_same_term == FALSE || \'post\' != $post->post_type )
        return $where;

    //
    // category IDs to ignore when choosing an adjacent post
    $to_ignore = [ 5 ]; 
    //
    // or get ID by slug (term=\'product\', taxonomy=\'category\'):
    //    $term = get_term_by(\'slug\', \'{your_term_slug}\', \'{your_taxonomy}\');
    //    if ( $term === false )
    //        return $where;
    //    $to_ignore = [ $term->term_id ];

    // get terms assigned to current post
    $term_array = wp_get_object_terms( $post->ID, $taxonomy, array( \'fields\' => \'ids\' ) );
    //
    // Remove any exclusions and ignored from the term array to include.
    $term_array = array_diff( $term_array, (array)$excluded_terms, $to_ignore );

    $term_array = array_map( \'intval\', $term_array );
    if ( ! $term_array || is_wp_error( $term_array ) )
        $term_array = [ 0 ];
    //
    // replace a part of the query string that limits results to given terms (categories)
    $sql__in_terms = \' AND tt.term_id IN (\' . implode( \',\', $term_array ) . \')\';
    $in_begin = strpos( $where, \'AND tt.term_id IN\' );
    $in_end = strpos( $where, \')\', $in_begin );

    $new_where = substr( $where, 0, $in_begin );
    $new_where .= $sql__in_terms;
    $new_where .= substr( $where, $in_end + 1 );

    return $new_where;
}