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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 |
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740 | if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) { |
741 |
|
742 | /** |
743 | * Fires once for each registered widget. |
744 | * |
745 | * @since 3.0.0 |
746 | * |
747 | * @param array $widget An array of default widget arguments. |
748 | */ |
749 | do_action( 'wp_register_sidebar_widget', $widget ); |
750 | $wp_registered_widgets[$id] = $widget; |
751 | } |
752 | } |
753 |
|
754 | /** |
755 | * Retrieve description for widget. |
756 | * |
757 | * When registering widgets, the options can also include 'description' that |
758 | * describes the widget for display on the widget administration panel or |