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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 |
|---|---|
| 271 | * |
| 272 | * @package WordPress |
| 273 | * @subpackage Feed |
| 274 | * @since 1.0.0 |
| 275 | * @uses apply_filters() Calls 'comment_text_rss' filter on comment content. |
| 276 | * @uses get_comment_text() |
| 277 | */ |
| 278 | function comment_text_rss() { |
| 279 | $comment_text = get_comment_text(); |
| 280 | $comment_text = apply_filters('comment_text_rss', $comment_text); |
| 281 | echo $comment_text; |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Retrieve all of the post categories, formatted for use in feeds. |
| 286 | * |
| 287 | * All of the categories for the current post in the feed loop, will be |
| 288 | * retrieved and have feed markup added, so that they can easily be added to the |
| 289 | * RSS2, Atom, or RSS1 and RSS0.91 RDF feeds. |