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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 |
|---|---|
| 2317 | $sidebar = array_diff( $sidebar, array( $widget_id ) ); |
| 2318 | $_POST = array( |
| 2319 | 'sidebar' => $sidebar_id, |
| 2320 | 'widget-' . $id_base => array(), |
| 2321 | 'the-widget-id' => $widget_id, |
| 2322 | 'delete_widget' => '1', |
| 2323 | ); |
| 2324 | |
| 2325 | /** This action is documented in wp-admin/widgets.php */ |
| 2326 | do_action( 'delete_widget', $widget_id, $sidebar_id, $id_base ); |
| 2327 | |
| 2328 | } elseif ( $settings && preg_match( '/__i__|%i%/', key( $settings ) ) ) { |
| 2329 | if ( ! $multi_number ) { |
| 2330 | wp_die( $error ); |
| 2331 | } |
| 2332 | |
| 2333 | $_POST[ 'widget-' . $id_base ] = array( $multi_number => reset( $settings ) ); |
| 2334 | $widget_id = $id_base . '-' . $multi_number; |
| 2335 | $sidebar[] = $widget_id; |