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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 |
|---|---|
| 446 | return false; // in-the-loop function |
| 447 | |
| 448 | if ( !$id ) |
| 449 | $id = (int) $post->ID; |
| 450 | |
| 451 | $tags = get_object_term_cache($id, 'post_tag'); |
| 452 | if ( false === $tags ) |
| 453 | $tags = wp_get_object_terms($id, 'post_tag'); |
| 454 | |
| 455 | $tags = apply_filters( 'get_the_tags', $tags ); |
| 456 | if ( empty( $tags ) ) |
| 457 | return false; |
| 458 | return $tags; |
| 459 | } |
| 460 | |
| 461 | function get_the_tag_list( $before = '', $sep = '', $after = '' ) { |
| 462 | $tags = get_the_tags(); |
| 463 | |
| 464 | if ( empty( $tags ) ) |