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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 |
---|---|
198 | if ( ! $wp_list_table->current_action() || ! isset( $_REQUEST['delete_tags'] ) ) { |
199 | break; |
200 | } |
201 | check_admin_referer( 'bulk-tags' ); |
202 |
|
203 | $screen = get_current_screen()->id; |
204 | $tags = (array) $_REQUEST['delete_tags']; |
205 |
|
206 | /** This action is documented in wp-admin/edit.php */ |
207 | $location = apply_filters( "handle_bulk_actions-{$screen}", $location, $wp_list_table->current_action(), $tags ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores |
208 | break; |
209 | } |
210 |
|
211 | if ( ! $location && ! empty( $_REQUEST['_wp_http_referer'] ) ) { |
212 | $location = remove_query_arg( array( '_wp_http_referer', '_wpnonce' ), wp_unslash( $_SERVER['REQUEST_URI'] ) ); |
213 | } |
214 |
|
215 | if ( $location ) { |
216 | if ( $pagenum > 1 ) { |