Get a variable field of all comments of current post

1 comment

1. 1. To get the comments use get_comments() and the current post’s ID.
   2. To get the URL fields only use wp_list_pluck().
   3. To remove the empty fields use array_filter() without a callback.

   .

   $comment_urls = array ();
   $all_comments = get_comments( array ( 'post_id' => get_the_ID() ) );
   
   if ( $all_comments )
   {
       $comment_urls = array_filter( 
           wp_list_pluck( $all_comments, 'comment_author_url' ) 
       );
   }
   

   $comment_urls is now an array of URLS. Don’t forget to use esc_url() when you print those into your page.

   You could also filter 'comments_clauses' to query for comments with a non-empty URL field only. That might be faster.

   add_filter( 'comments_clauses', 'wpse_66056_get_urls_only' );
   function wpse_66056_get_urls_only( $sql )
   {
       remove_filter( current_filter(), __FUNCTION__ );
       $sql['where'] = $sql['where'] . " AND comment_author_url != ''";
       return $sql;
   }
   $all_comments = get_comments(
       array (
           'post_id' => get_the_ID(),
       )
   );
   $comment_urls = wp_list_pluck( $all_comments, 'comment_author_url' );
   

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