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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 |
|---|---|
| 1688 | |
| 1689 | /** |
| 1690 | * Filters the robots.txt output. |
| 1691 | * |
| 1692 | * @since 3.0.0 |
| 1693 | * |
| 1694 | * @param string $output The robots.txt output. |
| 1695 | * @param bool $public Whether the site is considered "public". |
| 1696 | */ |
| 1697 | echo apply_filters( 'robots_txt', $output, $public ); |
| 1698 | } |
| 1699 | |
| 1700 | /** |
| 1701 | * Display the favicon.ico file content. |
| 1702 | * |
| 1703 | * @since 5.4.0 |
| 1704 | */ |
| 1705 | function do_favicon() { |
| 1706 | /** |