get_admin_page_title

function get_admin_page_title() {
	global $title, $menu, $submenu, $pagenow, $plugin_page, $typenow;

	if ( ! empty( $title ) ) {
		return $title;
	}

	$hook = get_plugin_page_hook( $plugin_page, $pagenow );

	$parent  = get_admin_page_parent();
	$parent1 = $parent;

	if ( empty( $parent ) ) {
		foreach ( (array) $menu as $menu_array ) {
			if ( isset( $menu_array[3] ) ) {
				if ( $menu_array[2] == $pagenow ) {
					$title = $menu_array[3];
					return $menu_array[3];
				} elseif ( isset( $plugin_page ) && ( $plugin_page == $menu_array[2] ) && ( $hook == $menu_array[5] ) ) {
					$title = $menu_array[3];
					return $menu_array[3];
				}
			} else {
				$title = $menu_array[0];
				return $title;
			}
		}
	} else {
		foreach ( array_keys( $submenu ) as $parent ) {
			foreach ( $submenu[ $parent ] as $submenu_array ) {
				if ( isset( $plugin_page ) &&
					( $plugin_page == $submenu_array[2] ) &&
					(
						( $parent == $pagenow ) ||
						( $parent == $plugin_page ) ||
						( $plugin_page == $hook ) ||
						( 'admin.php' === $pagenow && $parent1 != $submenu_array[2] ) ||
						( ! empty( $typenow ) && $parent == $pagenow . '?post_type=' . $typenow )
					)
					) {
						$title = $submenu_array[3];
						return $submenu_array[3];
				}

				if ( $submenu_array[2] != $pagenow || isset( $_GET['page'] ) ) { // Not the current page.
					continue;
				}

				if ( isset( $submenu_array[3] ) ) {
					$title = $submenu_array[3];
					return $submenu_array[3];
				} else {
					$title = $submenu_array[0];
					return $title;
				}
			}
		}
		if ( empty( $title ) ) {
			foreach ( $menu as $menu_array ) {
				if ( isset( $plugin_page ) &&
					( $plugin_page == $menu_array[2] ) &&
					( 'admin.php' === $pagenow ) &&
					( $parent1 == $menu_array[2] ) ) {
						$title = $menu_array[3];
						return $menu_array[3];
				}
			}
		}
	}

	return $title;
}