This function’s access is marked private. This means it is not intended for use by plugin or theme developers, only in other core functions. It is listed here for completeness.

_wp_admin_bar_init()

Instantiate the admin bar object and set it up as a global for access elsewhere.

Description

UNHOOKING THIS FUNCTION WILL NOT PROPERLY REMOVE THE ADMIN BAR. For that, use show_admin_bar(false) or the ‘show_admin_bar’ filter.

Return

(bool) Whether the admin bar was successfully initialized.

Source

File: wp-includes/admin-bar.php 

function _wp_admin_bar_init() {
	global $wp_admin_bar;

	if ( ! is_admin_bar_showing() )
		return false;

	/* Load the admin bar class code ready for instantiation */
	require_once( ABSPATH . WPINC . '/class-wp-admin-bar.php' );

	/* Instantiate the admin bar */

	/**
	 * Filters the admin bar class to instantiate.
	 *
	 * @since WP-3.1.0
	 *
	 * @param string $wp_admin_bar_class Admin bar class to use. Default 'WP_Admin_Bar'.
	 */
	$admin_bar_class = apply_filters( 'wp_admin_bar_class', 'WP_Admin_Bar' );
	if ( class_exists( $admin_bar_class ) )
		$wp_admin_bar = new $admin_bar_class;
	else
		return false;

	$wp_admin_bar->initialize();
	$wp_admin_bar->add_menus();

	return true;
}

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Related

Changelog

Changelog
Version Description
WP-3.1.0 Introduced.