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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 |
|---|---|
| 396 | if ( $cat ) |
| 397 | $title = apply_filters('single_cat_title', $cat->name); |
| 398 | } |
| 399 | |
| 400 | if ( !empty($tag) ) { |
| 401 | $tag = get_term($tag, 'post_tag', OBJECT, 'display'); |
| 402 | if ( is_wp_error( $tag ) ) |
| 403 | return $tag; |
| 404 | if ( ! empty($tag->name) ) |
| 405 | $title = apply_filters('single_tag_title', $tag->name); |
| 406 | } |
| 407 | |
| 408 | // If there's an author |
| 409 | if ( !empty($author) ) { |
| 410 | $title = get_userdata($author); |
| 411 | $title = $title->display_name; |
| 412 | } |
| 413 | if ( !empty($author_name) ) { |
| 414 | // We do a direct query here because we don't cache by nicename. |
| Line | Code |
| 564 | if ( !is_tag() ) |
| 565 | return; |
| 566 | |
| 567 | $tag_id = intval( get_query_var('tag_id') ); |
| 568 | |
| 569 | if ( !empty($tag_id) ) { |
| 570 | $my_tag = &get_term($tag_id, 'post_tag', OBJECT, 'display'); |
| 571 | if ( is_wp_error( $my_tag ) ) |
| 572 | return false; |
| 573 | $my_tag_name = apply_filters('single_tag_title', $my_tag->name); |
| 574 | if ( !empty($my_tag_name) ) { |
| 575 | if ( $display ) |
| 576 | echo $prefix . $my_tag_name; |
| 577 | else |
| 578 | return $my_tag_name; |
| 579 | } |
| 580 | } |
| 581 | } |
| 582 | |