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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 |
|---|---|
| 232 | $post = $wp_query->get_queried_object(); |
| 233 | $title = strip_tags( apply_filters( 'single_post_title', $post->post_title ) ); |
| 234 | } |
| 235 | |
| 236 | $prefix = ''; |
| 237 | if ( !empty($title) ) |
| 238 | $prefix = " $sep "; |
| 239 | |
| 240 | $title = $prefix . $title; |
| 241 | $title = apply_filters('wp_title', $title, $sep); |
| 242 | |
| 243 | // Send it out |
| 244 | if ( $display ) |
| 245 | echo $title; |
| 246 | else |
| 247 | return $title; |
| 248 | } |
| 249 | |
| 250 | |