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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 |
|---|---|
| 1477 | |
| 1478 | /** |
| 1479 | * Filters the page title for a single post. |
| 1480 | * |
| 1481 | * @since 0.71 |
| 1482 | * |
| 1483 | * @param string $_post_title The single post page title. |
| 1484 | * @param WP_Post $_post The current post. |
| 1485 | */ |
| 1486 | $title = apply_filters( 'single_post_title', $_post->post_title, $_post ); |
| 1487 | if ( $display ) { |
| 1488 | echo $prefix . $title; |
| 1489 | } else { |
| 1490 | return $prefix . $title; |
| 1491 | } |
| 1492 | } |
| 1493 | |
| 1494 | /** |
| 1495 | * Displays or retrieves title for a post type archive. |