Php 自定义帖子类型上所有帖子的WP循环特定元框值

我已经为自定义帖子类型上所有帖子的特定于循环的metabox值创建了函数。它工作得很好。代码如下：

$loop = new WP_Query(array('post_type' => 'myposttype', 'posts_per_page' => -1)); 
while ( $loop->have_posts() ) : $loop->the_post();

  $custom_fields = get_post_custom($post->ID);
  $my_custom_field = $custom_fields['custommetabox_mb'];
  foreach ( $my_custom_field as $key => $value ) {
    echo $value . "<br />";
  }

endwhile;

我想要的是，如果custommetabox_mbb的值与文本yiedpozi相同，只需循环custommetabox_mb

我如何才能做到这一点？

使用

---

工作正常D谢谢。为什么要打下线？-编辑：我不是指作者的名字。。。我指的是投票。

First  = custommetabox_mb
Second = custommetabox_mbb

$args = array('post_type' => 'myposttype', 'meta_query' => array(
        'relation' => 'AND',
        array(
            'key' => 'custommetabox_mb',
            'value' => 'yiedpozi',
            'compare' => '='
        ),
        array(
            'key' => 'custommetabox_mbb',
            'value' => 'yiedpozi',
            'compare' => '='
        )
    ),  'posts_per_page' => -1,);

$loop = new WP_Query($args); 
while ( $loop->have_posts() ) : $loop->the_post();
$custom_fields = get_post_custom($post->ID);
$my_custom_field = $custom_fields['custommetabox_mb'];
foreach ( $my_custom_field as $key => $value ) {
    echo $value . "<br />";
  }

endwhile;