我正在尝试获取应用了元值的帖子trainees.

$args = array(
    \'posts_per_page\'   => -1,
    \'orderby\'          => \'post_date\',
    \'order\'            => \'DESC\',
    \'post_status\'      => \'publish\',
    \'meta_query\' => array(
        array(
            \'key\'     => \'enterprise_on_page\',
            \'value\'   => array( \'trainees\' ),
            \'compare\' => \'IN\',
        ),
    ),
);

$enterprise_posts = get_posts( $args );

在我的meta字段中，在\\u页上的键为enterprise\\u我存储了一个数组（）之前类似的update_post_meta( $post_id, \'enterprise_on_page\', array(\'trainees\', \'staff\') );.<如果我打电话var_dump(get_post_meta($post->ID)) 我得到以下输出：

\'enterprise_on_page\' => 
    array (size=1)
      0 => string \'a:2:{i:0;s:8:"trainees";i:1;s:7:"staff";}\' 

我如何修改我的查询以便只发布具有元值的帖子trainees 如图所示。到现在为止，我没有收到任何帖子。

$args = array(
    \'posts_per_page\'   => -1,
    \'orderby\'          => \'post_date\',
    \'order\'            => \'DESC\',
    \'post_status\'      => \'publish\',
    \'meta_query\' => array(
        array(
            \'key\'     => \'enterprise_on_page\',
            \'value\'   => serialize(strval(\'trainees\')),
            \'compare\' => \'LIKE\',
        ),
    ),
);

$enterprise_posts = get_posts( $args );