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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.
| Line | Code |
|---|---|
| 2374 | * |
| 2375 | * @since 3.7.0 |
| 2376 | * |
| 2377 | * @param object $counts An object containing the current post_type's post |
| 2378 | * counts by status. |
| 2379 | * @param string $type Post type. |
| 2380 | * @param string $perm The permission to determine if the posts are 'readable' |
| 2381 | * by the current user. |
| 2382 | */ |
| 2383 | return apply_filters( 'wp_count_posts', $counts, $type, $perm ); |
| 2384 | } |
| 2385 | |
| 2386 | /** |
| 2387 | * Count number of attachments for the mime type(s). |
| 2388 | * |
| 2389 | * If you set the optional mime_type parameter, then an array will still be |
| 2390 | * returned, but will only have the item you are looking for. It does not give |
| 2391 | * you the number of attachments that are children of a post. You can get that |
| 2392 | * by counting the number of children that post has. |