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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 |
|---|---|
| 639 | /** |
| 640 | * Filters the comment excerpt for display. |
| 641 | * |
| 642 | * @since 1.2.0 |
| 643 | * @since 4.1.0 The `$comment_ID` parameter was added. |
| 644 | * |
| 645 | * @param string $comment_excerpt The comment excerpt text. |
| 646 | * @param int $comment_ID The comment ID. |
| 647 | */ |
| 648 | echo apply_filters( 'comment_excerpt', $comment_excerpt, $comment->comment_ID ); |
| 649 | } |
| 650 | |
| 651 | /** |
| 652 | * Retrieve the comment id of the current comment. |
| 653 | * |
| 654 | * @since 1.5.0 |
| 655 | * |
| 656 | * @return int The comment ID. |
| 657 | */ |