You can create a widget (Create a Widget) like this:
<?php /*
Plugin Name: WDG
Plugin URI:
Description: Plugin
Version: 0.1
Author URI:
*/
add_action( 'widgets_init', 'my_wdg' );
function my_wdg() {
register_widget( 'Wdg' );
}
class Wdg extends WP_Widget {
function Wdg() {
/* Settings of widget */
$widget_ops = array( 'classname' => 'Widget', 'description' => ' Plugin' );
/* Control settings of widget */
$control_ops = array( 'width' => 300, 'height' => 350, 'id_base' => 'wdg' );
/* Create widget */
$this->WP_Widget( 'wdg', 'Wdg', $widget_ops, $control_ops );
}
function widget( $args, $instance ) {
extract( $args );
/* User-selected settings. */
$title = apply_filters('widget_title', $instance['title'] );
/* Before widget (theme defined). */
echo $before_widget;
/* Widget title (before e after theme defined). */
if ( $title )
echo $before_title . $title . $after_title;
echo' <div id="recent">
<ul>';
rewind_posts();
query_posts('posts_per_page=3');
if ( have_posts() ) : while ( have_posts() ) : the_post();?>
<li>
<h5><a href="https://wordpress.stackexchange.com/questions/15140/<?php the_permalink(); ?>" title="<?php the_title();?>">
<?php the_title();?>
</a></h5>
<span>
<?php the_excerpt ?>
</span>
</li>
<?php endwhile; else: ?>
<p>I'm sorry</p>
<?php endif; ?>
</ul>
</div>
<?php echo $after_widget; }
function update( $new_instance, $old_instance ) {
$instance = $old_instance;
/* Strip tags modify qidget configuration. */
$instance['title'] = strip_tags( $new_instance['title'] );
return $instance;
}
function form( $instance ) {
/* default widget setting */
$defaults = array(
'title' => 'Recent Comments',
);
$instance = wp_parse_args( (array) $instance, $defaults ); ?>
<p>
<label for="<?php echo $this->get_field_id( 'title' ); ?>">Title:</label>
<input id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" value="<?php echo $instance['title']; ?>" style="width:100%;" />
</p>
<?php
}
} ?>
This widget probably works!