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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 3 times in this file.
| Line | Code |
|---|---|
| 528 | $search = get_query_var('s'); |
| 529 | $title = ''; |
| 530 | |
| 531 | $t_sep = '%WP_TITILE_SEP%'; // Temporary separator, for accurate flipping, if necessary |
| 532 | |
| 533 | // If there's a category |
| 534 | if ( !empty($cat) ) { |
| 535 | // category exclusion |
| 536 | if ( !stristr($cat,'-') ) |
| 537 | $title = apply_filters('single_cat_title', get_the_category_by_ID($cat)); |
| 538 | } elseif ( !empty($category_name) ) { |
| 539 | if ( stristr($category_name,'/') ) { |
| 540 | $category_name = explode('/',$category_name); |
| 541 | if ( $category_name[count($category_name)-1] ) |
| 542 | $category_name = $category_name[count($category_name)-1]; // no trailing slash |
| 543 | else |
| 544 | $category_name = $category_name[count($category_name)-2]; // there was a trailling slash |
| 545 | } |
| 546 | $cat = get_term_by('slug', $category_name, 'category', OBJECT, 'display'); |
| 547 | if ( $cat ) |
| 548 | $title = apply_filters('single_cat_title', $cat->name); |
| 549 | } |
| 550 | |
| 551 | if ( !empty($tag) ) { |
| 552 | $tag = get_term($tag, 'post_tag', OBJECT, 'display'); |
| 553 | if ( is_wp_error( $tag ) ) |
| 554 | return $tag; |
| 555 | if ( ! empty($tag->name) ) |
| 556 | $title = apply_filters('single_tag_title', $tag->name); |
| 557 | } |
| Line | Code |
| 688 | global $wp_query; |
| 689 | |
| 690 | if ( is_tag() ) |
| 691 | return single_tag_title($prefix, $display); |
| 692 | |
| 693 | if ( !is_category() ) |
| 694 | return; |
| 695 | |
| 696 | $cat = $wp_query->get_queried_object(); |
| 697 | $my_cat_name = apply_filters('single_cat_title', $cat->name); |
| 698 | if ( !empty($my_cat_name) ) { |
| 699 | if ( $display ) |
| 700 | echo $prefix . $my_cat_name; |
| 701 | else |
| 702 | return $my_cat_name; |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | /** |