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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 |
|---|---|
| 420 | /** |
| 421 | * Filters the retrieved post excerpt. |
| 422 | * |
| 423 | * @since 1.2.0 |
| 424 | * @since 4.5.0 Introduced the `$post` parameter. |
| 425 | * |
| 426 | * @param string $post_excerpt The post excerpt. |
| 427 | * @param WP_Post $post Post object. |
| 428 | */ |
| 429 | return apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ); |
| 430 | } |
| 431 | |
| 432 | /** |
| 433 | * Determines whether the post has a custom excerpt. |
| 434 | * |
| 435 | * For more information on this and similar theme functions, check out |
| 436 | * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/ |
| 437 | * Conditional Tags} article in the Theme Developer Handbook. |
| 438 | * |