在我的插件中，我使用以下说明获取帖子列表：

$args = array(
    \'numberposts\'     => -1,
    \'offset\'          => 0,
    \'meta_query\' => array(
        array(
            \'key\' => \'metadata1\',
            \'value\' => \'80\',
            \'compare\' => \'<=\',
            \'type\' => \'UNSIGNED\'
        ),
        array(
            \'key\' => \'metadata2\',
            \'value\' => \'4.6\',
            \'compare\' => \'<=\',
            \'type\' => \'DECIMAL\'
        ),
    ),
    \'post_type\'       => \'post\',
    \'post_status\'     => \'publish\',
    \'suppress_filters\' => true );

$posts = get_posts($args);

foreach ($posts as $post) {
    // some work on $post
}