apply_filters( ‘is_post_type_viewable’, bool $is_viewable, WP_Post_Type $post_type )

Filters whether a post type is considered “viewable”.

Description

The returned filtered value must be a boolean type to ensure is_post_type_viewable() only returns a boolean. This strictness is by design to maintain backwards-compatibility and guard against potential type errors in PHP 8.1+. Non-boolean values (even falsey and truthy values) will result in the function returning false.

Parameters

$is_viewablebool
Whether the post type is "viewable" (strict type).
$post_typeWP_Post_Type
Post type object.

Source

return true === apply_filters( 'is_post_type_viewable', $is_viewable, $post_type );

Changelog

VersionDescription
5.9.0Introduced.

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