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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 |
|---|---|
| 241 | /** |
| 242 | * Filters the media widget instance prior to rendering the media. |
| 243 | * |
| 244 | * @since 4.8.0 |
| 245 | * |
| 246 | * @param array $instance Instance data. |
| 247 | * @param array $args Widget args. |
| 248 | * @param WP_Widget_Media $this Widget object. |
| 249 | */ |
| 250 | $instance = apply_filters( "widget_{$this->id_base}_instance", $instance, $args, $this ); |
| 251 | |
| 252 | $this->render_media( $instance ); |
| 253 | |
| 254 | echo $args['after_widget']; |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Sanitizes the widget form values as they are saved. |
| 259 | * |