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post_type_exists( string $post_type )

Determines whether a post type is registered.

For more information on this and similar theme functions, check out the Conditional Tags article in the Theme Developer Handbook.

(bool) Whether post type is registered.

function post_type_exists( $post_type ) {
	return (bool) get_post_type_object( $post_type );
}

Uses	Description
wp-includes/post.php: get_post_type_object()	Retrieves a post type object by name.

Used By	Description
wp-admin/includes/post.php: use_block_editor_for_post_type()	Return whether a post type is compatible with the block editor.
wp-includes/class-wp-customize-nav-menus.php: WP_Customize_Nav_Menus::ajax_insert_auto_draft_post()	Ajax handler for adding a new auto-draft post.
wp-includes/post.php: unregister_post_type()	Unregisters a post type.
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php: WP_Customize_Nav_Menu_Item_Setting::populate_value()	Ensure that the value is fully populated with the necessary properties.
wp-admin/includes/class-wp-screen.php: WP_Screen::get()	Fetches a screen object.
wp-admin/includes/export.php: export_wp()	Generates the WXR export file for download.
wp-admin/includes/nav-menu.php: _wp_ajax_menu_quick_search()	Prints the appropriate response to a menu quick search.
wp-includes/taxonomy.php: get_ancestors()	Get an array of ancestor IDs for a given object.
wp-includes/post.php: wp_count_posts()	Count number of posts of a post type and if user has permissions to view.
wp-includes/post.php: is_post_type_hierarchical()	Whether the post type is hierarchical.
wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getPostType()	Retrieves a post type

Version	Description
3.0.0	Introduced.

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Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/post_type_exists