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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 |
|---|---|
| 114 | $permalink_structure = get_option('permalink_structure'); |
| 115 | |
| 116 | if ( '' == $permalink_structure ) { |
| 117 | $link = get_option('home') . '?feed=rss2&author=' . $author_id; |
| 118 | } else { |
| 119 | $link = get_author_posts_url($author_id, $author_nicename); |
| 120 | $link = trailingslashit($link) . user_trailingslashit('feed', 'feed'); |
| 121 | } |
| 122 | |
| 123 | $link = apply_filters('author_feed_link', $link); |
| 124 | |
| 125 | if ( $echo ) |
| 126 | echo $link; |
| 127 | return $link; |
| 128 | } |
| 129 | |
| 130 | |
| 131 | function get_category_rss_link($echo = false, $cat_ID, $category_nicename) { |
| 132 | $permalink_structure = get_option('permalink_structure'); |