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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 |
---|---|
2264 | * is by design to maintain backwards-compatibility and guard against |
2265 | * potential type errors in PHP 8.1+. Non-boolean values (even falsey |
2266 | * and truthy values) will result in the function returning false. |
2267 | * |
2268 | * @since 5.9.0 |
2269 | * |
2270 | * @param bool $is_viewable Whether the post type is "viewable" (strict type). |
2271 | * @param WP_Post_Type $post_type Post type object. |
2272 | */ |
2273 | return true === apply_filters( 'is_post_type_viewable', $is_viewable, $post_type ); |
2274 | } |
2275 |
|
2276 | /** |
2277 | * Determines whether a post status is considered "viewable". |
2278 | * |
2279 | * For built-in post statuses such as publish and private, the 'public' value will be evaluated. |
2280 | * For all others, the 'publicly_queryable' value will be used. |
2281 | * |
2282 | * @since 5.7.0 |