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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 |
|---|---|
| 2401 | |
| 2402 | /** |
| 2403 | * Filters whether a post is sticky. |
| 2404 | * |
| 2405 | * @since 5.3.0 |
| 2406 | * |
| 2407 | * @param bool $is_sticky Whether a post is sticky. |
| 2408 | * @param int $post_id Post ID. |
| 2409 | */ |
| 2410 | return apply_filters( 'is_sticky', $is_sticky, $post_id ); |
| 2411 | } |
| 2412 | |
| 2413 | /** |
| 2414 | * Sanitizes every post field. |
| 2415 | * |
| 2416 | * If the context is 'raw', then the post object or array will get minimal |
| 2417 | * sanitization of the integer fields. |
| 2418 | * |
| 2419 | * @since 2.3.0 |