Add and imprrt portfolio in Wordpress

<?php
add_action('init', 'portfolio_register');

function portfolio_register() {

$labels = array(
'name' => _x('My Portfolio', 'post type general name'),
'singular_name' => _x('Portfolio Item', 'post type singular name'),
'add_new' => _x('Add New', 'portfolio item'),
'add_new_item' => __('Add New Portfolio Item'),
'edit_item' => __('Edit Portfolio Item'),
'new_item' => __('New Portfolio Item'),
'view_item' => __('View Portfolio Item'),
'search_items' => __('Search Portfolio'),
'not_found' =>  __('Nothing found'),
'not_found_in_trash' => __('Nothing found in Trash'),
'parent_item_colon' => ''
);

$args = array(
'labels' => $labels,
'public' => true,
'publicly_queryable' => true,
'show_ui' => true,
'query_var' => true,
'menu_icon' => get_stylesheet_directory_uri() . '/images/icon-admin-menu.png',
'rewrite' => true,
'capability_type' => 'post',
'hierarchical' => false,
'menu_position' => null,
'supports' => array('title','editor','thumbnail')
 );

register_post_type( 'portfolio' , $args );
}


register_taxonomy("Skills", array("portfolio"), array("hierarchical" => true, "label" => "Skills", "singular_label" => "Skill", "rewrite" => true));


add_action("admin_init", "admin_init");

function admin_init(){
  add_meta_box("year_completed-meta", "Year Completed", "year_completed", "portfolio", "side", "low");
  add_meta_box("credits_meta", "Design &amp; Build Credits", "credits_meta", "portfolio", "normal", "low");
}

function year_completed(){
  global $post;
  $custom = get_post_custom($post->ID);
  $year_completed = $custom["year_completed"][0];
  ?>
  <label>Year:</label>
  <input name="year_completed" value="<?php echo $year_completed; ?>" />
  <?php
}

function credits_meta() {
  global $post;
  $custom = get_post_custom($post->ID);
  $designers = $custom["designers"][0];
  $developers = $custom["developers"][0];
  $producers = $custom["producers"][0];
  ?>
  <p><label>Designed By:</label><br />
  <textarea cols="50" rows="5" name="designers"><?php echo $designers; ?></textarea></p>
  <p><label>Built By:</label><br />
  <textarea cols="50" rows="5" name="developers"><?php echo $developers; ?></textarea></p>
  <p><label>Produced By:</label><br />
  <textarea cols="50" rows="5" name="producers"><?php echo $producers; ?></textarea></p>
  <?php
}


add_meta_box( $id, $title, $callback, $page, $context, $priority );

global $post;
$custom = get_post_custom($post->ID);

add_action('save_post', 'save_details');

function save_details(){
  global $post;

  update_post_meta($post->ID, "year_completed", $_POST["year_completed"]);
  update_post_meta($post->ID, "designers", $_POST["designers"]);
  update_post_meta($post->ID, "developers", $_POST["developers"]);
  update_post_meta($post->ID, "producers", $_POST["producers"]);
}

add_action("manage_posts_custom_column",  "portfolio_custom_columns");
add_filter("manage_edit-portfolio_columns", "portfolio_edit_columns");

function portfolio_edit_columns($columns){
  $columns = array(
    "cb" => "<input type='checkbox' />",
    "title" => "Portfolio Title",
    "description" => "Description",
    "year" => "Year Completed",
    "skills" => "Skills",
  );

  return $columns;
}
function portfolio_custom_columns($column){
  global $post;

  switch ($column) {
    case "description":
      the_excerpt();
      break;
    case "year":
      $custom = get_post_custom();
      echo $custom["year_completed"][0];
      break;
    case "skills":
      echo get_the_term_list($post->ID, 'Skills', '', ', ','');
      break;
  }
}
?>

View Data
<?php
/**
 * Template Name: Portfolio
 * Description: A Page Template that showcases Sticky Posts, Asides, and Blog Posts
 *
 * The showcase template in Twenty Eleven consists of a featured posts section using sticky posts,
 * another recent posts area (with the latest post shown in full and the rest as a list)
 * and a left sidebar holding aside posts.
 *
 * We are creating two queries to fetch the proper posts and a custom widget for the sidebar.
 *
 * @package WordPress
 * @subpackage Twenty_Eleven
 * @since Twenty Eleven 1.0
 */

// Enqueue showcase script for the slider
get_header(); ?>
<div class="content">
<div class="contentLeft">
<h1 class="pageTitle">Indian Food Starters</h1>

<?php
if ( get_query_var('paged') ) { $paged = get_query_var('paged'); }
elseif ( get_query_var('page') ) { $paged = get_query_var('page'); }
else { $paged = 1; }
$args = array(
'post_type' => 'indian_food',
'posts_per_page'=>3,
'paged'=>$paged,
'order'=>'ASC',
'tax_query' => array(
array(
'taxonomy' => 'indian_food_categories',
'field' => 'term_id',
'terms' => 3
)
)
);
query_posts($args);
?>
<?php if ( have_posts() ) : ?>
<div class="menu-list">
<ul>
<?php
$a=1;
while ( have_posts() ) : the_post();   ?>

<li>
<div class="food-image">
<?php
if ( has_post_thumbnail() ) {
  the_post_thumbnail(array(135,95));
}
else
{?>
<img width="111" height="95" alt="foof1"  src="<?php echo get_template_directory_uri(); ?>/images/no_image.jpg">
<?php  }
?>
</div>

<div class="food-content">
<h2 class="cvttl"><?php the_title(); ?></h2>
    <?php $string = get_the_content(); ?>
                  </div>
 <div class="cls"></div>
 </li>

<?php  $a++; endwhile; ?>
</ul>

<div class="food-pagination">
<?php if (function_exists("pagination")) {
    pagination($additional_loop->max_num_pages);
} ?>
</div>
</div>


<?php else : ?>
           

<article id="post-0" class="post no-results not-found">
<header class="entry-header">
<h1 class="entry-title"><?php _e( 'Nothing Found', 'twentyeleven' ); ?></h1>
</header><!-- .entry-header -->

<div class="entry-content">
<p><?php _e( 'Apologies, but no results were found for the requested archive. Perhaps searching will help find a related post.', 'twentyeleven' ); ?></p>
<?php get_search_form(); ?>
</div><!-- .entry-content -->
</article><!-- #post-0 -->

<?php endif; ?>

</div>
<div class="contentRgt">

</div>
<div class="cls"></div>
</div>

<?php //get_sidebar(); ?>
<?php get_footer(); ?>