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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 |
|---|---|
| 991 | * Retrieve the tags for a post. |
| 992 | * |
| 993 | * @since 2.3.0 |
| 994 | * @uses apply_filters() Calls 'get_the_tags' filter on the list of post tags. |
| 995 | * |
| 996 | * @param int $id Post ID. |
| 997 | * @return array |
| 998 | */ |
| 999 | function get_the_tags( $id = 0 ) { |
| 1000 | return apply_filters( 'get_the_tags', get_the_terms( $id, 'post_tag' ) ); |
| 1001 | } |
| 1002 | |
| 1003 | /** |
| 1004 | * Retrieve the tags for a post formatted as a string. |
| 1005 | * |
| 1006 | * @since 2.3.0 |
| 1007 | * @uses apply_filters() Calls 'the_tags' filter on string list of tags. |
| 1008 | * |
| 1009 | * @param string $before Optional. Before tags. |