WordPress widgets is a great feature for displaying your content in sidebar. It is easy to create by extending WP_Widget predefined wordpress class.

Constructing Widget

class your_widget extends WP_Widget {
  public function __construct() {
    $this->WP_Widget(
      'your_widget_unique_id',
      __('Your Widget Title'),
      array('description' => __('Your Widget brief description', 'your_widget_unique_id'))
    );
  }

  public function widget( $args, $instance ) {
    extract($args);
    $title = esc_attr($instance['title']);
    echo $before_widget.$before_title.'Your Widget Sidebar Heading'.$after_title;
    if ( function_exists('your_custom_function') ){
      your_custom_function();
    }
    echo $after_widget;
  }
}

Widget function call

function your_widget_init() {
  register_widget('your_widget');
}

Hook your widget function call

add_action('widgets_init', 'your_widget_init');

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