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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 |
|---|---|
| 2354 | */ |
| 2355 | function wp_trim_excerpt($text = '') { |
| 2356 | $raw_excerpt = $text; |
| 2357 | if ( '' == $text ) { |
| 2358 | $text = get_the_content(''); |
| 2359 | |
| 2360 | $text = strip_shortcodes( $text ); |
| 2361 | |
| 2362 | /** This filter is documented in wp-includes/post-template.php */ |
| 2363 | $text = apply_filters( 'the_content', $text ); |
| 2364 | $text = str_replace(']]>', ']]>', $text); |
| 2365 | |
| 2366 | /** |
| 2367 | * Filter the number of words in an excerpt. |
| 2368 | * |
| 2369 | * @since 2.7.0 |
| 2370 | * |
| 2371 | * @param int $number The number of words. Default 55. |
| 2372 | */ |