利用wordpress自身强大的查询功能获取当前分类下的所有文章

<?php 
    //get current custom post_type category
    $terms = get_the_terms( $post->ID, 'yourtaxonomy name' );

    // get the first term
    $term = array_shift( $terms );
    //get the slug 
    $get_current_slug = $term->slug;
?>
<?php
//create a new custom query_posts
global $wp_query;
query_posts( array( 
                    'post_type' => 'portfolio', 
                    'showposts' => 30,
                    'tax_query' => array( 
                                           'relation' => 'AND', 
                                           array( 
                                                  'taxonomy' => 'yourtaxonomy name', 
                                                  'field' => 'slug',
                                                  'terms' => array( 
                                                                    $get_current_slug,
                                                                    
                                                                   ) 
                                                ) 
                                        ) 
                  ) 
);               
?>                     
<?php while ( have_posts() ) : the_post(); ?>
<a href="<?php echo get_permalink($post->ID) ?>" class="cattitle">
<?php the_title();?>
</a>
<?php endwhile; wp_reset_query();  ?>