register_widget( string|WP_Widget $widget )

User Contributed Notes

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   Codex 10 years ago

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   Example

   <?php
   /**
    * Class WPDocs_New_Widget
    */
   class WPDocs_New_Widget extends WP_Widget {
   
   	/**
   	 * Constructs the new widget.
   	 *
   	 * @see WP_Widget::__construct()
   	 */
   	function __construct() {
   		// Instantiate the parent object.
   		parent::__construct( false, __( 'My New Widget Title', 'textdomain' ) );
   	}
   
   	/**
   	 * The widget's HTML output.
   	 *
   	 * @see WP_Widget::widget()
   	 *
   	 * @param array $args     Display arguments including before_title, after_title,
   	 *                        before_widget, and after_widget.
   	 * @param array $instance The settings for the particular instance of the widget.
   	 */
   	function widget( $args, $instance ) {}
   
   	/**
   	 * The widget update handler.
   	 *
   	 * @see WP_Widget::update()
   	 *
   	 * @param array $new_instance The new instance of the widget.
   	 * @param array $old_instance The old instance of the widget.
   	 * @return array The updated instance of the widget.
   	 */
   	function update( $new_instance, $old_instance ) {
   		return $new_instance;
   	}
   
   	/**
   	 * Output the admin widget options form HTML.
   	 *
   	 * @param array $instance The current widget settings.
   	 * @return string The HTML markup for the form.
   	 */
   	function form( $instance ) {
   		return '';
   	}
   }
   
   add_action( 'widgets_init', 'wpdocs_register_widgets' );
   
   /**
    * Register the new widget.
    *
    * @see 'widgets_init'
    */
   function wpdocs_register_widgets() {
   	register_widget( 'WPDocs_New_Widget' );
   }