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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 |
|---|---|
| 1159 | 'before_title' => '<h2 class="widgettitle">', |
| 1160 | 'after_title' => '</h2>', |
| 1161 | ); |
| 1162 | $args = wp_parse_args( $args, $default_args ); |
| 1163 | $args['before_widget'] = sprintf( $args['before_widget'], $widget_obj->widget_options['classname'] ); |
| 1164 | |
| 1165 | $instance = wp_parse_args( $instance ); |
| 1166 | |
| 1167 | /** This filter is documented in wp-includes/class-wp-widget.php */ |
| 1168 | $instance = apply_filters( 'widget_display_callback', $instance, $widget_obj, $args ); |
| 1169 | |
| 1170 | if ( false === $instance ) { |
| 1171 | return; |
| 1172 | } |
| 1173 | |
| 1174 | /** |
| 1175 | * Fires before rendering the requested widget. |
| 1176 | * |
| 1177 | * @since 3.0.0 |