I’m looking to change the post created date to a modified date on my post template (single.php). Moreso, I’m looking to control when I update that date based on whether I make significant changes to the post.
I’m thinking I might have to create a custom field as well as an option box in the edit post screen to set the custom field. Maybe there’s a simpler way?
use this into the loop or if you want to change created date to modified date than replace that with below code. As I know this feature works from all version of wordpress after 2.1
More detail you can find here http://codex.wordpress.org/Template_Tags/the_modified_date