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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 |
|---|---|
| 2527 | */ |
| 2528 | function wp_trim_excerpt($text = '') { |
| 2529 | $raw_excerpt = $text; |
| 2530 | if ( '' == $text ) { |
| 2531 | $text = get_the_content(''); |
| 2532 | |
| 2533 | $text = strip_shortcodes( $text ); |
| 2534 | |
| 2535 | /** This filter is documented in wp-includes/post-template.php */ |
| 2536 | $text = apply_filters( 'the_content', $text ); |
| 2537 | $text = str_replace(']]>', ']]>', $text); |
| 2538 | |
| 2539 | /** |
| 2540 | * Filter the number of words in an excerpt. |
| 2541 | * |
| 2542 | * @since 2.7.0 |
| 2543 | * |
| 2544 | * @param int $number The number of words. Default 55. |
| 2545 | */ |