Untitled

class Image_Widget extends WP_Widget {
 
  // Constructor function
  function __construct() {
    parent::__construct(
      'image_widget',
      'Image Widget',
      array( 'description' => 'Displays an image' )
    );
  }
 
  // Widget output function
  function widget( $args, $instance ) {
    echo $args['before_widget'];
    
    // Check if the image URL is set
    if ( ! empty( $instance['image_url'] ) ) {
      echo '<img src="' . esc_url( $instance['image_url'] ) . '" />';
    }

    echo $args['after_widget'];
  }
 
  // Widget form function
  function form( $instance ) {
    $image_url = ! empty( $instance['image_url'] ) ? $instance['image_url'] : '';
    ?>
    <p>
      <label for="<?php echo $this->get_field_id( 'image_url' ); ?>">Image URL:</label>
      <input type="text" class="widefat" id="<?php echo $this->get_field_id( 'image_url' ); ?>" name="<?php echo $this->get_field_name( 'image_url' ); ?>" value="<?php echo esc_attr( $image_url ); ?>" />
    </p>
    <?php
  }
 
  // Widget update function
  function update( $new_instance, $old_instance ) {
    $instance = array();
    $instance['image_url'] = ! empty( $new_instance['image_url'] ) ? strip_tags( $new_instance['image_url'] ) : '';
    return $instance;
  }
}

// Register the widget
function register_image_widget() {
  register_widget( 'Image_Widget' );
}
add_action( 'widgets_init', 'register_image_widget' );