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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 |
|---|---|
| 3304 | */ |
| 3305 | function wp_trim_excerpt( $text = '' ) { |
| 3306 | $raw_excerpt = $text; |
| 3307 | if ( '' == $text ) { |
| 3308 | $text = get_the_content(''); |
| 3309 | |
| 3310 | $text = strip_shortcodes( $text ); |
| 3311 | |
| 3312 | /** This filter is documented in wp-includes/post-template.php */ |
| 3313 | $text = apply_filters( 'the_content', $text ); |
| 3314 | $text = str_replace(']]>', ']]>', $text); |
| 3315 | |
| 3316 | /** |
| 3317 | * Filters the number of words in an excerpt. |
| 3318 | * |
| 3319 | * @since 2.7.0 |
| 3320 | * |
| 3321 | * @param int $number The number of words. Default 55. |
| 3322 | */ |