すべてのカテゴリに属する記事のみ表示　welcart top くみさん

<?php
$get_posts_args = array(
    'category__and' => array( 1, 2, 3 ),
    'numberposts' => 10,
    'order' => 'DESC',
    'orderby' => 'date'
);
$postslist = get_posts( $get_posts_args );
foreach ( $postslist as $post ) {
?>
    <li><a href=<?php echo get_permalink( $post->ID ); ?>><?php echo $post->post_title; ?></a></li>
<?php
}
?>
</ul>