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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
Line | Code |
---|---|
2622 | if ( ! post_type_exists( $type ) ) { |
2623 | return new stdClass; |
2624 | } |
2625 |
|
2626 | $cache_key = _count_posts_cache_key( $type, $perm ); |
2627 |
|
2628 | $counts = wp_cache_get( $cache_key, 'counts' ); |
2629 | if ( false !== $counts ) { |
2630 | /** This filter is documented in wp-includes/post.php */ |
2631 | return apply_filters( 'wp_count_posts', $counts, $type, $perm ); |
2632 | } |
2633 |
|
2634 | $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s"; |
2635 | if ( 'readable' == $perm && is_user_logged_in() ) { |
2636 | $post_type_object = get_post_type_object( $type ); |
2637 | if ( ! current_user_can( $post_type_object->cap->read_private_posts ) ) { |
2638 | $query .= $wpdb->prepare( |
2639 | " AND (post_status != 'private' OR ( post_author = %d AND post_status = 'private' ))", |
2640 | get_current_user_id() |
Line | Code |
2658 | * |
2659 | * @since 3.7.0 |
2660 | * |
2661 | * @param object $counts An object containing the current post_type's post |
2662 | * counts by status. |
2663 | * @param string $type Post type. |
2664 | * @param string $perm The permission to determine if the posts are 'readable' |
2665 | * by the current user. |
2666 | */ |
2667 | return apply_filters( 'wp_count_posts', $counts, $type, $perm ); |
2668 | } |
2669 |
|
2670 | /** |
2671 | * Count number of attachments for the mime type(s). |
2672 | * |
2673 | * If you set the optional mime_type parameter, then an array will still be |
2674 | * returned, but will only have the item you are looking for. It does not give |
2675 | * you the number of attachments that are children of a post. You can get that |
2676 | * by counting the number of children that post has. |