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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 |
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358 | } |
359 |
|
360 | /** |
361 | * Filter the retrieved post excerpt. |
362 | * |
363 | * @since 1.2.0 |
364 | * |
365 | * @param string $post_excerpt The post excerpt. |
366 | */ |
367 | return apply_filters( 'get_the_excerpt', $post->post_excerpt ); |
368 | } |
369 |
|
370 | /** |
371 | * Whether post has excerpt. |
372 | * |
373 | * @since 2.3.0 |
374 | * |
375 | * @param int|WP_Post $id Optional. Post ID or post object. |
376 | * @return bool |