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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 |
|---|---|
| 569 | $words = explode( ' ', $comment_text ); |
| 570 | |
| 571 | /** |
| 572 | * Filter the amount of words used in the comment excerpt. |
| 573 | * |
| 574 | * @since 4.4.0 |
| 575 | * |
| 576 | * @param int $comment_excerpt_length The amount of words you want to display in the comment excerpt. |
| 577 | */ |
| 578 | $comment_excerpt_length = apply_filters( 'comment_excerpt_length', 20 ); |
| 579 | |
| 580 | $use_ellipsis = count( $words ) > $comment_excerpt_length; |
| 581 | if ( $use_ellipsis ) { |
| 582 | $words = array_slice( $words, 0, $comment_excerpt_length ); |
| 583 | } |
| 584 | |
| 585 | $excerpt = trim( join( ' ', $words ) ); |
| 586 | if ( $use_ellipsis ) { |
| 587 | $excerpt .= '…'; |