问在wordpress中显示不同颜色的自定义post用户智能

EN

<?php 
add_user_meta( $user_id, 'subscribed_posts', $post_id);
//$post_id is the id of post user subscribes to.
?>

<?php 
 $args = array(
    'posts_per_page'   => -1,
    'post_type'        => 'post',
    'post_status'      => 'publish',
    'fields'        =>'ids'
);

$the_query = new WP_Query( $args );//Query for all post that you want to display
if ( $the_query->have_posts() ) :

$subscribed_posts = get_user_meta($user_id);//Get current user id and fetch all subscribed posts.

while ( $the_query->have_posts() ) : $the_query->the_post();?>
    <div class="default <?php echo in_array(get_the_ID(),$subscribed_posts)?'green':'gray'?>">
        /*Your post content for every post goes here*/
    </div>
<?php
endwhile;
endif;
wp_reset_postdata();