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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 781 | * Retrieve the tags for a post. |
| 782 | * |
| 783 | * @since 2.3.0 |
| 784 | * @uses apply_filters() Calls 'get_the_tags' filter on the list of post tags. |
| 785 | * |
| 786 | * @param int $id Post ID. |
| 787 | * @return array |
| 788 | */ |
| 789 | function get_the_tags( $id = 0 ) { |
| 790 | return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) ); |
| 791 | } |
| 792 | |
| 793 | /** |
| 794 | * Retrieve the tags for a post formatted as a string. |
| 795 | * |
| 796 | * @since 2.3.0 |
| 797 | * @uses apply_filters() Calls 'the_tags' filter on string list of tags. |
| 798 | * |
| 799 | * @param string $before Optional. Before tags. |