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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 |
|---|---|
| 220 | |
| 221 | // Short-circuit if no media is selected. |
| 222 | if ( ! $this->has_content( $instance ) ) { |
| 223 | return; |
| 224 | } |
| 225 | |
| 226 | echo $args['before_widget']; |
| 227 | |
| 228 | /** This filter is documented in wp-includes/widgets/class-wp-widget-pages.php */ |
| 229 | $title = apply_filters( 'widget_title', $instance['title'], $instance, $this->id_base ); |
| 230 | |
| 231 | if ( $title ) { |
| 232 | echo $args['before_title'] . $title . $args['after_title']; |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * Filters the media widget instance prior to rendering the media. |
| 237 | * |
| 238 | * @since 4.8.0 |