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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 |
---|---|
540 | function comment_excerpt( $comment_ID = 0 ) { |
541 | $comment_excerpt = get_comment_excerpt($comment_ID); |
542 | /** |
543 | * Filter the comment excerpt for display. |
544 | * |
545 | * @since 1.2.0 |
546 | * |
547 | * @param string $comment_excerpt The comment excerpt text. |
548 | */ |
549 | echo apply_filters( 'comment_excerpt', $comment_excerpt ); |
550 | } |
551 |
|
552 | /** |
553 | * Retrieve the comment id of the current comment. |
554 | * |
555 | * @since 1.5.0 |
556 | * |
557 | * @return int The comment ID. |
558 | */ |