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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 |
|---|---|
| 4 | $info = strip_tags(get_bloginfo($show)); |
| 5 | return apply_filters('get_bloginfo_rss', convert_chars($info), $show); |
| 6 | } |
| 7 | |
| 8 | function bloginfo_rss($show = '') { |
| 9 | echo apply_filters('bloginfo_rss', get_bloginfo_rss($show), $show); |
| 10 | } |
| 11 | |
| 12 | function get_default_feed() { |
| 13 | return apply_filters('default_feed', 'rss2'); |
| 14 | } |
| 15 | |
| 16 | function get_wp_title_rss($sep = '»') { |
| 17 | $title = wp_title($sep, false); |
| 18 | if ( is_wp_error( $title ) ) |
| 19 | return $title->get_error_message(); |
| 20 | $title = apply_filters('get_wp_title_rss', $title); |
| 21 | return $title; |
| 22 | } |