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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.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 443 | if ( $cat ) |
| 444 | $title = apply_filters('single_cat_title', $cat->name); |
| 445 | } |
| 446 | |
| 447 | if ( !empty($tag) ) { |
| 448 | $tag = get_term($tag, 'post_tag', OBJECT, 'display'); |
| 449 | if ( is_wp_error( $tag ) ) |
| 450 | return $tag; |
| 451 | if ( ! empty($tag->name) ) |
| 452 | $title = apply_filters('single_tag_title', $tag->name); |
| 453 | } |
| 454 | |
| 455 | // If there's an author |
| 456 | if ( !empty($author) ) { |
| 457 | $title = get_userdata($author); |
| 458 | $title = $title->display_name; |
| 459 | } |
| 460 | if ( !empty($author_name) ) { |
| 461 | // We do a direct query here because we don't cache by nicename. |
| Line | Code |
| 617 | if ( !is_tag() ) |
| 618 | return; |
| 619 | |
| 620 | $tag_id = intval( get_query_var('tag_id') ); |
| 621 | |
| 622 | if ( !empty($tag_id) ) { |
| 623 | $my_tag = &get_term($tag_id, 'post_tag', OBJECT, 'display'); |
| 624 | if ( is_wp_error( $my_tag ) ) |
| 625 | return false; |
| 626 | $my_tag_name = apply_filters('single_tag_title', $my_tag->name); |
| 627 | if ( !empty($my_tag_name) ) { |
| 628 | if ( $display ) |
| 629 | echo $prefix . $my_tag_name; |
| 630 | else |
| 631 | return $my_tag_name; |
| 632 | } |
| 633 | } |
| 634 | } |
| 635 | |