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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 |
|---|---|
| 201 | * The dynamic portion of the hook name, `$screen`, refers to the current screen ID. |
| 202 | * |
| 203 | * @since 4.7.0 |
| 204 | * |
| 205 | * @param string $sendback The redirect URL. |
| 206 | * @param string $doaction The action being taken. |
| 207 | * @param array $items The items to take the action on. Accepts an array of IDs of posts, |
| 208 | * comments, terms, links, plugins, attachments, or users. |
| 209 | */ |
| 210 | $sendback = apply_filters( "handle_bulk_actions-{$screen}", $sendback, $doaction, $post_ids ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
| 211 | break; |
| 212 | } |
| 213 | |
| 214 | $sendback = remove_query_arg( array( 'action', 'action2', 'tags_input', 'post_author', 'comment_status', 'ping_status', '_status', 'post', 'bulk_edit', 'post_view' ), $sendback ); |
| 215 | |
| 216 | wp_redirect( $sendback ); |
| 217 | exit; |
| 218 | } elseif ( ! empty( $_REQUEST['_wp_http_referer'] ) ) { |
| 219 | wp_redirect( remove_query_arg( array( '_wp_http_referer', '_wpnonce' ), wp_unslash( $_SERVER['REQUEST_URI'] ) ) ); |