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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 |
---|---|
334 | /** |
335 | * Filter the displayed post excerpt. |
336 | * |
337 | * @since 0.71 |
338 | * |
339 | * @see get_the_excerpt() |
340 | * |
341 | * @param string $post_excerpt The post excerpt. |
342 | */ |
343 | echo apply_filters( 'the_excerpt', get_the_excerpt() ); |
344 | } |
345 |
|
346 | /** |
347 | * Retrieve the post excerpt. |
348 | * |
349 | * @since 0.71 |
350 | * |
351 | * @param mixed $deprecated Not used. |
352 | * @return string |