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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 |
|---|---|
| 202 | if ( ! $this->has_content( $instance ) ) { |
| 203 | return; |
| 204 | } |
| 205 | |
| 206 | echo $args['before_widget']; |
| 207 | |
| 208 | if ( $instance['title'] ) { |
| 209 | |
| 210 | /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
| 211 | $title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ); |
| 212 | echo $args['before_title'] . $title . $args['after_title']; |
| 213 | } |
| 214 | |
| 215 | /** |
| 216 | * Filters the media widget instance prior to rendering the media. |
| 217 | * |
| 218 | * @since 4.8.0 |
| 219 | * |
| 220 | * @param array $instance Instance data. |