Codehooligans.com: Adding Custom Columns to WordPress Post listing

codehooligans-adding-custom-columns-to-wordpress-post-listing.php

<?php
add_filter( 'manage_edit-post_columns', 'admin_post_header_columns', 10, 1);
add_action( 'manage_posts_custom_column', 'admin_post_data_row', 10, 2);

function admin_post_header_columns($columns)
{
	if (!isset($columns['note']))
		$columns['note'] = "Notes";
	
	return $columns;
}

function admin_post_data_row($column_name, $post_id)
{
	switch($column_name)
	{
		case 'note':		
			// Logic to display post 'Note' field information here.
			// $post_note = get_post_meta($post_id, 'note', true);
			//if ($post_note)	echo $post_note;
			
			break;
						
		default:
			break;
	}
}