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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 |
|---|---|
| 2190 | |
| 2191 | if ( ! post_type_exists( $type ) ) |
| 2192 | return new stdClass; |
| 2193 | |
| 2194 | $cache_key = _count_posts_cache_key( $type, $perm ); |
| 2195 | |
| 2196 | $counts = wp_cache_get( $cache_key, 'counts' ); |
| 2197 | if ( false !== $counts ) { |
| 2198 | /** This filter is documented in wp-includes/post.php */ |
| 2199 | return apply_filters( 'wp_count_posts', $counts, $type, $perm ); |
| 2200 | } |
| 2201 | |
| 2202 | $query = "SELECT post_status, COUNT( * ) AS num_posts FROM {$wpdb->posts} WHERE post_type = %s"; |
| 2203 | if ( 'readable' == $perm && is_user_logged_in() ) { |
| 2204 | $post_type_object = get_post_type_object($type); |
| 2205 | if ( ! current_user_can( $post_type_object->cap->read_private_posts ) ) { |
| 2206 | $query .= $wpdb->prepare( " AND (post_status != 'private' OR ( post_author = %d AND post_status = 'private' ))", |
| 2207 | get_current_user_id() |
| 2208 | ); |
| Line | Code |
| 2225 | * |
| 2226 | * @since 3.7.0 |
| 2227 | * |
| 2228 | * @param object $counts An object containing the current post_type's post |
| 2229 | * counts by status. |
| 2230 | * @param string $type Post type. |
| 2231 | * @param string $perm The permission to determine if the posts are 'readable' |
| 2232 | * by the current user. |
| 2233 | */ |
| 2234 | return apply_filters( 'wp_count_posts', $counts, $type, $perm ); |
| 2235 | } |
| 2236 | |
| 2237 | /** |
| 2238 | * Count number of attachments for the mime type(s). |
| 2239 | * |
| 2240 | * If you set the optional mime_type parameter, then an array will still be |
| 2241 | * returned, but will only have the item you are looking for. It does not give |
| 2242 | * you the number of attachments that are children of a post. You can get that |
| 2243 | * by counting the number of children that post has. |