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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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915 | if ( is_callable($output_callback) && ( !isset($wp_registered_widgets[$id]) || did_action( 'widgets_init' ) ) ) { |
916 |
|
917 | /** |
918 | * Fires once for each registered widget. |
919 | * |
920 | * @since 3.0.0 |
921 | * |
922 | * @param array $widget An array of default widget arguments. |
923 | */ |
924 | do_action( 'wp_register_sidebar_widget', $widget ); |
925 | $wp_registered_widgets[$id] = $widget; |
926 | } |
927 | } |
928 |
|
929 | /** |
930 | * Retrieve description for widget. |
931 | * |
932 | * When registering widgets, the options can also include 'description' that |
933 | * describes the widget for display on the widget administration panel or |