2020-05-02 / 2002阅 / 悠然
Retrieve the time at which the post was last modified.
(string)
(Optional)
Format to use for retrieving the time the post was modified. Either 'G', 'U', or PHP date format defaults to the value specified in the time_format option.
Default value: ''
(int|WP_Post)
(Optional)
Post ID or WP_Post object. Default current post.
Default value: null
(string|false) Formatted date string or Unix timestamp. False on failure.