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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 |
|---|---|
| 180 | /** |
| 181 | * Display the permalink to the post for use in feeds. |
| 182 | * |
| 183 | * @package WordPress |
| 184 | * @subpackage Feed |
| 185 | * @since 2.3.0 |
| 186 | * @uses apply_filters() Call 'the_permalink_rss' on the post permalink |
| 187 | */ |
| 188 | function the_permalink_rss() { |
| 189 | echo esc_url( apply_filters('the_permalink_rss', get_permalink() )); |
| 190 | } |
| 191 | |
| 192 | /** |
| 193 | * Outputs the link to the comments for the current post in an xml safe way |
| 194 | * |
| 195 | * @since 3.0.0 |
| 196 | * @return none |
| 197 | */ |
| 198 | function comments_link_feed() { |