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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 |
|---|---|
| 793 | * containing the widget object. Fired on the back end, $callback |
| 794 | * is 'wp_widget_control', see $_callback. |
| 795 | * @type array $params An associative array of multi-widget arguments. |
| 796 | * @type string $classname CSS class applied to the widget container. |
| 797 | * @type string $description The widget description. |
| 798 | * @type array $_callback When the hook is fired on the back end, $_callback is populated |
| 799 | * with an array containing the widget object, see $callback. |
| 800 | * } |
| 801 | */ |
| 802 | do_action( 'dynamic_sidebar', $wp_registered_widgets[ $id ] ); |
| 803 | |
| 804 | if ( is_callable( $callback ) ) { |
| 805 | call_user_func_array( $callback, $params ); |
| 806 | $did_one = true; |
| 807 | } |
| 808 | } |
| 809 | |
| 810 | /** |
| 811 | * Fires after widgets are rendered in a dynamic sidebar. |