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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 |
|---|---|
| 1197 | 'before_title' => '<h2 class="widgettitle">', |
| 1198 | 'after_title' => '</h2>', |
| 1199 | ); |
| 1200 | $args = wp_parse_args( $args, $default_args ); |
| 1201 | $args['before_widget'] = sprintf( $args['before_widget'], $widget_obj->widget_options['classname'] ); |
| 1202 | |
| 1203 | $instance = wp_parse_args( $instance ); |
| 1204 | |
| 1205 | /** This filter is documented in wp-includes/class-wp-widget.php */ |
| 1206 | $instance = apply_filters( 'widget_display_callback', $instance, $widget_obj, $args ); |
| 1207 | |
| 1208 | if ( false === $instance ) { |
| 1209 | return; |
| 1210 | } |
| 1211 | |
| 1212 | /** |
| 1213 | * Fires before rendering the requested widget. |
| 1214 | * |
| 1215 | * @since 3.0.0 |