function cpt_custom_columns($columns){
global $post;
if(isset($_GET[\'post_type\']) && $_GET[\'post_type\'] == "banners"){
switch($_GET[\'post_type\']){
case "banners":
$order = ($_GET[\'order\'] == "ASC") ? "DESC" : "ASC";
$output = "<a id=\'sort-banner-order\' class=\'".strtolower($order)."\' href=\'".get_bloginfo(\'wpurl\')."/wp-admin/edit.php?post_type=banners&orderby=meta_value_num&meta_key=order&order=$order\'>
<span>Order</span><span class=\'sorting-indicator\'></span></a>";
$columns[\'banner-order\'] = $output;
break;
}
}
return $columns;
}
add_filter(\'manage_posts_columns\', \'cpt_custom_columns\');