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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 |
|---|---|
| 717 | * containing the widget object. Fired on the back-end, $callback |
| 718 | * is 'wp_widget_control', see $_callback. |
| 719 | * @type array $params An associative array of multi-widget arguments. |
| 720 | * @type string $classname CSS class applied to the widget container. |
| 721 | * @type string $description The widget description. |
| 722 | * @type array $_callback When the hook is fired on the back-end, $_callback is populated |
| 723 | * with an array containing the widget object, see $callback. |
| 724 | * } |
| 725 | */ |
| 726 | do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] ); |
| 727 | |
| 728 | if ( is_callable($callback) ) { |
| 729 | call_user_func_array($callback, $params); |
| 730 | $did_one = true; |
| 731 | } |
| 732 | } |
| 733 | |
| 734 | /** |
| 735 | * Fires after widgets are rendered in a dynamic sidebar. |