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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 |
|---|---|
| 2188 | * @return string The excerpt. |
| 2189 | */ |
| 2190 | function wp_trim_excerpt($text = '') { |
| 2191 | $raw_excerpt = $text; |
| 2192 | if ( '' == $text ) { |
| 2193 | $text = get_the_content(''); |
| 2194 | |
| 2195 | $text = strip_shortcodes( $text ); |
| 2196 | |
| 2197 | $text = apply_filters('the_content', $text); |
| 2198 | $text = str_replace(']]>', ']]>', $text); |
| 2199 | $excerpt_length = apply_filters('excerpt_length', 55); |
| 2200 | $excerpt_more = apply_filters('excerpt_more', ' ' . '[…]'); |
| 2201 | $text = wp_trim_words( $text, $excerpt_length, $excerpt_more ); |
| 2202 | } |
| 2203 | return apply_filters('wp_trim_excerpt', $text, $raw_excerpt); |
| 2204 | } |
| 2205 | |
| 2206 | /** |