好的，我有一个非常简单的问题。但我不擅长php，所以在这里发布。我的投资组合项目输出的锚定标记如下：

<a href="http://localhost/dianero/portfolio/kahida/" rel="41">kahida</a>

&；我的缩略图输出如下：

<img width="792" height="535" src="http://localhost/dianero/wp-content/uploads/2014/12/pic3.jpg" class="main-image portfolio  wp-post-image" alt="pic3" id="photo_" style="display: none;">

正如你所看到的，我的缩略图有id“photo\\u0”。我想要的是将锚定标记rel值添加到此id。因此它们看起来是：“photo\\u 41”、“photo\\u 42”&；等等。。。

我的wp页面代码如下：

<div class="main-interior portfolio" id="portfolio-big-pics" style="display: block;">
<?php $args = array( \'post_type\' => \'portfolio\', \'order\' => \'ASC\');
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post(); ?>
<?php $extraLastClass = $loop->current_post + 1 === $loop->post_count ? \' main-image-porfolio-main\' : \'\';?>

<?php 
$attributes = array(
    "class" => "main-image portfolio " . $extraLastClass,
    "id" => "photo_",
);
the_post_thumbnail("large", $attributes);
?>

<?php endwhile; ?> 

<?php rewind_posts(); ?> 


    <div class="portfolio-box">
        <h5>Portfolio</h5>
        <ul class="item-list" id="portfolio-list">
        <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
        <li><a href="<?php the_permalink(); ?>" rel="<?php echo $post->ID; ?>"><?php the_title(); ?></a>
        </li>
        <?php endwhile; ?>              
        </ul>
    </div>

</div>

那么我该怎么做呢？

<?php 
    $attributes = array(
        "class" => "main-image portfolio " . $extraLastClass,
        "id" => "photo_" . $post->ID,
    );
    the_post_thumbnail( "large", $attributes );
?>