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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 |
|---|---|
| 327 | /** |
| 328 | * Filter the displayed post excerpt. |
| 329 | * |
| 330 | * @since 0.71 |
| 331 | * |
| 332 | * @see get_the_excerpt() |
| 333 | * |
| 334 | * @param string $post_excerpt The post excerpt. |
| 335 | */ |
| 336 | echo apply_filters( 'the_excerpt', get_the_excerpt() ); |
| 337 | } |
| 338 | |
| 339 | /** |
| 340 | * Retrieve the post excerpt. |
| 341 | * |
| 342 | * @since 0.71 |
| 343 | * |
| 344 | * @param mixed $deprecated Not used. |
| 345 | * @return string |