drupal-----add a field to the content type story

now, i want to add a dead time field(the style is 02-12-2010) to the content type story. how to do that, i used the hook_form_alter() and format_date(),but when i created a new article,and select the time.but开发者_运维技巧 the time can't show on the article's page.why?

Why don't try contributed modules instead?

A more elegant solution I think will be using the CCK module which provides the ability of adding new fields to content types (as well as creating new content types), you can install then the Date module provides you with the ability to attach date fields to content types.