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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 |
|---|---|
| 77 | * @uses wp_title() See function for $sep parameter usage. |
| 78 | * |
| 79 | * @param string $sep Optional.How to separate the title. See wp_title() for more info. |
| 80 | * @return string Error message on failure or blog title on success. |
| 81 | */ |
| 82 | function get_wp_title_rss($sep = '»') { |
| 83 | $title = wp_title($sep, false); |
| 84 | if ( is_wp_error( $title ) ) |
| 85 | return $title->get_error_message(); |
| 86 | $title = apply_filters('get_wp_title_rss', $title); |
| 87 | return $title; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Display the blog title for display of the feed title. |
| 92 | * |
| 93 | * @package WordPress |
| 94 | * @subpackage Feed |
| 95 | * @since 2.2.0 |