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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 |
|---|---|
| 3281 | */ |
| 3282 | function wp_trim_excerpt( $text = '' ) { |
| 3283 | $raw_excerpt = $text; |
| 3284 | if ( '' == $text ) { |
| 3285 | $text = get_the_content(''); |
| 3286 | |
| 3287 | $text = strip_shortcodes( $text ); |
| 3288 | |
| 3289 | /** This filter is documented in wp-includes/post-template.php */ |
| 3290 | $text = apply_filters( 'the_content', $text ); |
| 3291 | $text = str_replace(']]>', ']]>', $text); |
| 3292 | |
| 3293 | /** |
| 3294 | * Filters the number of words in an excerpt. |
| 3295 | * |
| 3296 | * @since 2.7.0 |
| 3297 | * |
| 3298 | * @param int $number The number of words. Default 55. |
| 3299 | */ |