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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 |
|---|---|
| 2889 | */ |
| 2890 | function wp_trim_excerpt( $text = '' ) { |
| 2891 | $raw_excerpt = $text; |
| 2892 | if ( '' == $text ) { |
| 2893 | $text = get_the_content(''); |
| 2894 | |
| 2895 | $text = strip_shortcodes( $text ); |
| 2896 | |
| 2897 | /** This filter is documented in wp-includes/post-template.php */ |
| 2898 | $text = apply_filters( 'the_content', $text ); |
| 2899 | $text = str_replace(']]>', ']]>', $text); |
| 2900 | |
| 2901 | /** |
| 2902 | * Filter the number of words in an excerpt. |
| 2903 | * |
| 2904 | * @since 2.7.0 |
| 2905 | * |
| 2906 | * @param int $number The number of words. Default 55. |
| 2907 | */ |