get_post_type_labels() WP 3.0.0

Builds an object with all post type labels out of a post type object.

Accepted keys of the label array in the post type object:

• name - General name for the post type, usually plural. The same and overridden by $post_type_object->label. Default is 'Posts' / 'Pages'.
• singular_name - Name for one object of this post type. Default is 'Post' / 'Page'.
• add_new - Default is 'Add New' for both hierarchical and non-hierarchical types. When internationalizing this string, please use a gettext context matching your post type. Example: _x('Add New','product','textdomain');.
• add_new_item - Label for adding a new singular item. Default is 'Add New Post' / 'Add New Page'.
• edit_item - Label for editing a singular item. Default is 'Edit Post' / 'Edit Page'.
• new_item - Label for the new item page title. Default is 'New Post' / 'New Page'.
• view_item - Label for viewing a singular item. Default is 'View Post' / 'View Page'.
• view_items - Label for viewing post type archives. Default is 'View Posts' / 'View Pages'.
• search_items - Label for searching plural items. Default is 'Search Posts' / 'Search Pages'.
• not_found - Label used when no items are found. Default is 'No posts found' / 'No pages found'.
• not_found_in_trash - Label used when no items are in the trash. Default is 'No posts found in Trash' / 'No pages found in Trash'.
• parent_item_colon - Label used to prefix parents of hierarchical items. Not used on non-hierarchical post types. Default is 'Parent Page:'.
• all_items - Label to signify all items in a submenu link. Default is 'All Posts' / 'All Pages'.
• archives - Label for archives in nav menus. Default is 'Post Archives' / 'Page Archives'.
• attributes - Label for the attributes meta box. Default is 'Post Attributes' / 'Page Attributes'.
• insert_into_item - Label for the media frame button. Default is 'Insert into post' / 'Insert into page'.
• uploaded_to_this_item - Label for the media frame filter. Default is 'Uploaded to this post' / 'Uploaded to this page'.
• featured_image - Label for the Featured Image meta box title. Default is 'Featured Image'.
• set_featured_image - Label for setting the featured image. Default is 'Set featured image'.
• remove_featured_image - Label for removing the featured image. Default is 'Remove featured image'.
• use_featured_image - Label in the media frame for using a featured image. Default is 'Use as featured image'.
• menu_name - Label for the menu name. Default is the same as name.
• filter_items_list - Label for the table views hidden heading. Default is 'Filter posts list' / 'Filter pages list'.
• items_list_navigation - Label for the table pagination hidden heading. Default is 'Posts list navigation' / 'Pages list navigation'.
• items_list - Label for the table hidden heading. Default is 'Posts list' / 'Pages list'.
• item_published - Label used when an item is published. Default is 'Post published.' / 'Page published.'
• item_published_privately - Label used when an item is published with private visibility. Default is 'Post published privately.' / 'Page published privately.'
• item_reverted_to_draft - Label used when an item is switched to a draft. Default is 'Post reverted to draft.' / 'Page reverted to draft.'
• item_scheduled - Label used when an item is scheduled for publishing. Default is 'Post scheduled.' / 'Page scheduled.'
• item_updated - Label used when an item is updated. Default is 'Post updated.' / 'Page updated.'

Above, the first default value is for non-hierarchical post types (like posts) and the second one is for hierarchical post types (like pages).

Note: To set labels used in post type admin notices, see the 'post_updated_messages' filter.

Return

Object. Object with all the labels as member variables.

Usage

get_post_type_labels( $post_type_object );

$post_type_object(object/WP_Post_Type) (required)

Post type object.

Code of get post type labels: wp-includes/post.php ^{WP 5.2.2}

<?php
function get_post_type_labels( $post_type_object ) {
	$nohier_vs_hier_defaults              = array(
		'name'                     => array( _x( 'Posts', 'post type general name' ), _x( 'Pages', 'post type general name' ) ),
		'singular_name'            => array( _x( 'Post', 'post type singular name' ), _x( 'Page', 'post type singular name' ) ),
		'add_new'                  => array( _x( 'Add New', 'post' ), _x( 'Add New', 'page' ) ),
		'add_new_item'             => array( __( 'Add New Post' ), __( 'Add New Page' ) ),
		'edit_item'                => array( __( 'Edit Post' ), __( 'Edit Page' ) ),
		'new_item'                 => array( __( 'New Post' ), __( 'New Page' ) ),
		'view_item'                => array( __( 'View Post' ), __( 'View Page' ) ),
		'view_items'               => array( __( 'View Posts' ), __( 'View Pages' ) ),
		'search_items'             => array( __( 'Search Posts' ), __( 'Search Pages' ) ),
		'not_found'                => array( __( 'No posts found.' ), __( 'No pages found.' ) ),
		'not_found_in_trash'       => array( __( 'No posts found in Trash.' ), __( 'No pages found in Trash.' ) ),
		'parent_item_colon'        => array( null, __( 'Parent Page:' ) ),
		'all_items'                => array( __( 'All Posts' ), __( 'All Pages' ) ),
		'archives'                 => array( __( 'Post Archives' ), __( 'Page Archives' ) ),
		'attributes'               => array( __( 'Post Attributes' ), __( 'Page Attributes' ) ),
		'insert_into_item'         => array( __( 'Insert into post' ), __( 'Insert into page' ) ),
		'uploaded_to_this_item'    => array( __( 'Uploaded to this post' ), __( 'Uploaded to this page' ) ),
		'featured_image'           => array( _x( 'Featured Image', 'post' ), _x( 'Featured Image', 'page' ) ),
		'set_featured_image'       => array( _x( 'Set featured image', 'post' ), _x( 'Set featured image', 'page' ) ),
		'remove_featured_image'    => array( _x( 'Remove featured image', 'post' ), _x( 'Remove featured image', 'page' ) ),
		'use_featured_image'       => array( _x( 'Use as featured image', 'post' ), _x( 'Use as featured image', 'page' ) ),
		'filter_items_list'        => array( __( 'Filter posts list' ), __( 'Filter pages list' ) ),
		'items_list_navigation'    => array( __( 'Posts list navigation' ), __( 'Pages list navigation' ) ),
		'items_list'               => array( __( 'Posts list' ), __( 'Pages list' ) ),
		'item_published'           => array( __( 'Post published.' ), __( 'Page published.' ) ),
		'item_published_privately' => array( __( 'Post published privately.' ), __( 'Page published privately.' ) ),
		'item_reverted_to_draft'   => array( __( 'Post reverted to draft.' ), __( 'Page reverted to draft.' ) ),
		'item_scheduled'           => array( __( 'Post scheduled.' ), __( 'Page scheduled.' ) ),
		'item_updated'             => array( __( 'Post updated.' ), __( 'Page updated.' ) ),
	);
	$nohier_vs_hier_defaults['menu_name'] = $nohier_vs_hier_defaults['name'];

	$labels = _get_custom_object_labels( $post_type_object, $nohier_vs_hier_defaults );

	$post_type = $post_type_object->name;

	$default_labels = clone $labels;

	/**
	 * Filters the labels of a specific post type.
	 *
	 * The dynamic portion of the hook name, `$post_type`, refers to
	 * the post type slug.
	 *
	 * @since 3.5.0
	 *
	 * @see get_post_type_labels() for the full list of labels.
	 *
	 * @param object $labels Object with labels for the post type as member variables.
	 */
	$labels = apply_filters( "post_type_labels_{$post_type}", $labels );

	// Ensure that the filtered labels contain all required default values.
	$labels = (object) array_merge( (array) $default_labels, (array) $labels );

	return $labels;
}