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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 |
|---|---|
| 287 | * |
| 288 | * By default, custom post types use the messages for the 'post' post type. |
| 289 | * |
| 290 | * @since 3.7.0 |
| 291 | * |
| 292 | * @param array $bulk_messages Arrays of messages, each keyed by the corresponding post type. Messages are |
| 293 | * keyed with 'updated', 'locked', 'deleted', 'trashed', and 'untrashed'. |
| 294 | * @param array $bulk_counts Array of item counts for each message, used to build internationalized strings. |
| 295 | */ |
| 296 | $bulk_messages = apply_filters( 'bulk_post_updated_messages', $bulk_messages, $bulk_counts ); |
| 297 | $bulk_counts = array_filter( $bulk_counts ); |
| 298 | |
| 299 | require_once( ABSPATH . 'wp-admin/admin-header.php' ); |
| 300 | ?> |
| 301 | <div class="wrap"> |
| 302 | <h1><?php |
| 303 | echo esc_html( $post_type_object->labels->name ); |
| 304 | if ( current_user_can( $post_type_object->cap->create_posts ) ) |
| 305 | echo ' <a href="' . esc_url( admin_url( $post_new_file ) ) . '" class="page-title-action">' . esc_html( $post_type_object->labels->add_new ) . '</a>'; |