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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 |
|---|---|
| 1434 | |
| 1435 | /** |
| 1436 | * Filters the page title for a single post. |
| 1437 | * |
| 1438 | * @since 0.71 |
| 1439 | * |
| 1440 | * @param string $_post_title The single post page title. |
| 1441 | * @param WP_Post $_post The current post. |
| 1442 | */ |
| 1443 | $title = apply_filters( 'single_post_title', $_post->post_title, $_post ); |
| 1444 | if ( $display ) { |
| 1445 | echo $prefix . $title; |
| 1446 | } else { |
| 1447 | return $prefix . $title; |
| 1448 | } |
| 1449 | } |
| 1450 | |
| 1451 | /** |
| 1452 | * Display or retrieve title for a post type archive. |