假设此meta用于post类型；“发布”；可以通过两种方式创建循环，get_posts 或WP_Query.
我也更喜欢meta_query 在上的属性meta_value 和meta_key, 因为它添加了一个选项，可以在数组已经存在的情况下更快地添加更多元查询。

这个get_posts 方法

$posts = get_posts([
    \'post_type\'      => \'post\',
    \'post_status\'    => \'publish\',
    \'posts_per_page\' => -1,
    \'meta_query\'     => [
        [
            \'key\'     => \'publisher\',
            \'value\'   => \'IBM\',
        ]
    ]
]);

foreach ($posts as $post) {
    // your code here
}

$posts = new WP_Query([
    \'post_type\'      => \'post\',
    \'post_status\'    => \'publish\',
    \'posts_per_page\' => -1,
    \'meta_query\'     => [
        [
            \'key\'     => \'publisher\',
            \'value\'   => \'IBM\',
        ]
    ]
]);

if ($posts->have_posts()) {
    while ($posts->have_posts()) {
        the_post();

        // your code here
    }
}