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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 |
|---|---|
| 426 | /** |
| 427 | * Display the excerpt of the current comment. |
| 428 | * |
| 429 | * @since 1.2.0 |
| 430 | * @uses apply_filters() Calls 'comment_excerpt' hook before displaying excerpt |
| 431 | * |
| 432 | * @param int $comment_ID The ID of the comment for which to print the excerpt. Optional. |
| 433 | */ |
| 434 | function comment_excerpt( $comment_ID = 0 ) { |
| 435 | echo apply_filters('comment_excerpt', get_comment_excerpt($comment_ID) ); |
| 436 | } |
| 437 | |
| 438 | /** |
| 439 | * Retrieve the comment id of the current comment. |
| 440 | * |
| 441 | * @since 1.5.0 |
| 442 | * @uses $comment |
| 443 | * @uses apply_filters() Calls the 'get_comment_ID' hook for the comment ID |
| 444 | * |