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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 |
|---|---|
| 2276 | * @since 2.8.0 |
| 2277 | * @since 3.6.0 Added the `$post` parameter. |
| 2278 | * @since 5.5.0 Also applied in the Customizer context. If any admin functions |
| 2279 | * are used within the filter, their existence should be checked |
| 2280 | * with `function_exists()` before being used. |
| 2281 | * |
| 2282 | * @param string[] $post_states An array of post display states. |
| 2283 | * @param WP_Post $post The current post object. |
| 2284 | */ |
| 2285 | return apply_filters( 'display_post_states', $post_states, $post ); |
| 2286 | } |
| 2287 | |
| 2288 | /** |
| 2289 | * Outputs the attachment media states as HTML. |
| 2290 | * |
| 2291 | * @since 3.2.0 |
| 2292 | * @since 5.6.0 Added the `$display` parameter and a return value. |
| 2293 | * |
| 2294 | * @param WP_Post $post The attachment post to retrieve states for. |