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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 |
|---|---|
| 371 | function WP_Widget_Text() { |
| 372 | $widget_ops = array('classname' => 'widget_text', 'description' => __('Arbitrary text or HTML')); |
| 373 | $control_ops = array('width' => 400, 'height' => 350); |
| 374 | $this->WP_Widget('text', __('Text'), $widget_ops, $control_ops); |
| 375 | } |
| 376 | |
| 377 | function widget( $args, $instance ) { |
| 378 | extract($args); |
| 379 | $title = apply_filters( 'widget_title', empty($instance['title']) ? '' : $instance['title'], $instance, $this->id_base); |
| 380 | $text = apply_filters( 'widget_text', $instance['text'], $instance ); |
| 381 | echo $before_widget; |
| 382 | if ( !empty( $title ) ) { echo $before_title . $title . $after_title; } ?> |
| 383 | <div class="textwidget"><?php echo $instance['filter'] ? wpautop($text) : $text; ?></div> |
| 384 | <?php |
| 385 | echo $after_widget; |
| 386 | } |
| 387 | |
| 388 | function update( $new_instance, $old_instance ) { |
| 389 | $instance = $old_instance; |