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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 |
|---|---|
| 275 | function comment_author_url( $comment_ID = 0 ) { |
| 276 | $author_url = get_comment_author_url( $comment_ID ); |
| 277 | /** |
| 278 | * Filter the comment author's URL for display. |
| 279 | * |
| 280 | * @since 1.2.0 |
| 281 | * |
| 282 | * @param string $author_url The comment author's URL. |
| 283 | */ |
| 284 | echo apply_filters( 'comment_url', $author_url ); |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Retrieves the HTML link of the url of the author of the current comment. |
| 289 | * |
| 290 | * $linktext parameter is only used if the URL does not exist for the comment |
| 291 | * author. If the URL does exist then the URL will be used and the $linktext |
| 292 | * will be ignored. |
| 293 | * |