get_comment_excerpt() WordPress Function
The get_comment_excerpt() function enables you to retrieve an excerpt for a comment. This is useful if you want to display a short summary of a comment on a list of comments, for example. The function takes a comment object as its only parameter.
get_comment_excerpt( int|WP_Comment $comment_ID ) #
Retrieves the excerpt of the given comment.
Description
Returns a maximum of 20 words with an ellipsis appended if necessary.
Parameters
- $comment_ID
- (int|WP_Comment)(Required)WP_Comment or ID of the comment for which to get the excerpt. Default current comment. 
Return
(string) The possibly truncated comment excerpt.
Source
File: wp-includes/comment-template.php
function get_comment_excerpt( $comment_ID = 0 ) {
	$comment = get_comment( $comment_ID );
	if ( ! post_password_required( $comment->comment_post_ID ) ) {
		$comment_text = strip_tags( str_replace( array( "\n", "\r" ), ' ', $comment->comment_content ) );
	} else {
		$comment_text = __( 'Password protected' );
	}
	/* translators: Maximum number of words used in a comment excerpt. */
	$comment_excerpt_length = (int) _x( '20', 'comment_excerpt_length' );
	/**
	 * Filters the maximum number of words used in the comment excerpt.
	 *
	 * @since 4.4.0
	 *
	 * @param int $comment_excerpt_length The amount of words you want to display in the comment excerpt.
	 */
	$comment_excerpt_length = apply_filters( 'comment_excerpt_length', $comment_excerpt_length );
	$excerpt = wp_trim_words( $comment_text, $comment_excerpt_length, '…' );
	/**
	 * Filters the retrieved comment excerpt.
	 *
	 * @since 1.5.0
	 * @since 4.1.0 The `$comment_ID` and `$comment` parameters were added.
	 *
	 * @param string     $excerpt    The comment excerpt text.
	 * @param string     $comment_ID The comment ID as a numeric string.
	 * @param WP_Comment $comment    The comment object.
	 */
	return apply_filters( 'get_comment_excerpt', $excerpt, $comment->comment_ID, $comment );
}
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Changelog
| Version | Description | 
|---|---|
| 4.4.0 | Added the ability for $comment_IDto also accept a WP_Comment object. | 
| 1.5.0 | Introduced. |