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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 |
|---|---|
| 192 | if ( $cat ) |
| 193 | $title = apply_filters('single_cat_title', $cat->name); |
| 194 | } |
| 195 | |
| 196 | if ( !empty($tag) ) { |
| 197 | $tag = get_term($tag, 'post_tag', OBJECT, 'display'); |
| 198 | if ( is_wp_error( $tag ) ) |
| 199 | return $tag; |
| 200 | if ( ! empty($tag->name) ) |
| 201 | $title = apply_filters('single_tag_title', $tag->name); |
| 202 | } |
| 203 | |
| 204 | // If there's an author |
| 205 | if ( !empty($author) ) { |
| 206 | $title = get_userdata($author); |
| 207 | $title = $title->display_name; |
| 208 | } |
| 209 | if ( !empty($author_name) ) { |
| 210 | // We do a direct query here because we don't cache by nicename. |
| Line | Code |
| 293 | if ( !is_tag() ) |
| 294 | return; |
| 295 | |
| 296 | $tag_id = intval( get_query_var('tag_id') ); |
| 297 | |
| 298 | if ( !empty($tag_id) ) { |
| 299 | $my_tag = &get_term($tag_id, 'post_tag', OBJECT, 'display'); |
| 300 | if ( is_wp_error( $my_tag ) ) |
| 301 | return false; |
| 302 | $my_tag_name = apply_filters('single_tag_title', $my_tag->name); |
| 303 | if ( !empty($my_tag_name) ) { |
| 304 | if ( $display ) |
| 305 | echo $prefix . $my_tag_name; |
| 306 | else |
| 307 | return $my_tag_name; |
| 308 | } |
| 309 | } |
| 310 | } |
| 311 | |