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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 |
|---|---|
| 2301 | |
| 2302 | /** |
| 2303 | * Filters whether a post is sticky. |
| 2304 | * |
| 2305 | * @since 5.3.0 |
| 2306 | * |
| 2307 | * @param bool $is_sticky Whether a post is sticky. |
| 2308 | * @param int $post_id Post ID. |
| 2309 | */ |
| 2310 | return apply_filters( 'is_sticky', $is_sticky, $post_id ); |
| 2311 | } |
| 2312 | |
| 2313 | /** |
| 2314 | * Sanitize every post field. |
| 2315 | * |
| 2316 | * If the context is 'raw', then the post object or array will get minimal |
| 2317 | * sanitization of the integer fields. |
| 2318 | * |
| 2319 | * @since 2.3.0 |