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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 |
|---|---|
| 817 | * @since 4.7.0 |
| 818 | * |
| 819 | * @param string $excerpt The post excerpt. |
| 820 | * @param WP_Post $post Post revision object. |
| 821 | * @return string Prepared excerpt or empty string. |
| 822 | */ |
| 823 | protected function prepare_excerpt_response( $excerpt, $post ) { |
| 824 | |
| 825 | /** This filter is documented in wp-includes/post-template.php */ |
| 826 | $excerpt = apply_filters( 'the_excerpt', $excerpt, $post ); |
| 827 | |
| 828 | if ( empty( $excerpt ) ) { |
| 829 | return ''; |
| 830 | } |
| 831 | |
| 832 | return $excerpt; |
| 833 | } |
| 834 | } |
| 835 | |