Làm thế nào để hiển thị thẻ Tag trong bai viết

Description
This template tag displays a link to the tag or tags a post belongs to. If no tags are associated with the current entry, nothing is displayed. This tag should be used within The Loop.

Usage

 <?php the_tags( $before, $sep, $after ); ?>

Parameters
$before
(string) Text to display before the actual tags are displayed. Defaults to Tags:
$sep
(string) Text or character to display between each tag link. The default is a comma (,) between each tag.
$after
(string) Text to display after the last tag. The default is to display nothing.
Return Values
None.

Examples
Default Usage
The default usage lists tags with each tag (if more than one) separated by a comma (,) and preceded with the default text Tags: .

<p><?php the_tags(); ?></p>
Separated by Commas
Displays a list of the tags with a line break after it.

 <?php the_tags( 'Tags: ', ', ', '<br />' ); ?>
Separated by Arrow
Displays links to tags with an arrow (>) separating the tags and preceded with the text Social tagging:

<?php the_tags( 'Social tagging: ',' > ' ); ?>
Separated by a Bullet
Displays links to tags with a bullet (•) separating the tags and preceded with the text Tagged with: and followed by a line break.

<?php the_tags( 'Tagged with: ', ' • ', '<br />' ); ?>
A List Example
Displays a list of the tags as an unordered list:

<?php the_tags( '<ul><li>', '</li><li>', '</li></ul>' ); ?>
Source Code
the_tags() is located in wp-includes/category-template.php
Change Log
Since: 2.3.0

Note About Custom Taxonomies
If you're using your own custom Post Types the_tags() and related functions will not work. You must use the_terms() and its related functions.