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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 |
|---|---|
| 638 | $widget = array( |
| 639 | 'name' => $name, |
| 640 | 'id' => $id, |
| 641 | 'callback' => $output_callback, |
| 642 | 'params' => array_slice(func_get_args(), 4) |
| 643 | ); |
| 644 | $widget = array_merge($widget, $options); |
| 645 | |
| 646 | if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) { |
| 647 | do_action( 'wp_register_sidebar_widget', $widget ); |
| 648 | $wp_registered_widgets[$id] = $widget; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | /** |
| 653 | * Retrieve description for widget. |
| 654 | * |
| 655 | * When registering widgets, the options can also include 'description' that |
| 656 | * describes the widget for display on the widget administration panel or |