Add colums image in Post admin area

add_filter( 'manage_post_posts_columns', 'smashing_filter_posts_columns' );
function smashing_filter_posts_columns( $columns ) {
  $columns['image'] = __( 'Image' );
  $columns['price'] = __( 'Price', 'smashing' );
  $columns['area'] = __( 'Area', 'smashing' );
  return $columns;
}


add_action( 'manage_post_posts_custom_column', 'smashing_realestate_column', 10, 2);
function smashing_realestate_column( $column, $post_id ) {
  // Image column
  if ( 'image' === $column ) {
    echo get_the_post_thumbnail( $post_id, array(80, 80) );
  }
}