Online PHP editor | refs for nfMti

<?php $array = [ [ "FirstName" => "Tom", "LastName" => "Jones", "EmployeeID" => "123", "ManagerEmployeeID" => "", "Manager Name" => "", ], [ "FirstName" => "Alice", "LastName" => "Wong", "EmployeeID" => "456", "ManagerEmployeeID" => "123", "Manager Name" => "Tom Jones", ], [ "FirstName" => "Tommy", "LastName" => "J.", "EmployeeID" => "654", "ManagerEmployeeID" => "123", "Manager Name" => "Tom Jones", ], [ "FirstName" => "Billy", "LastName" => "Bob", "EmployeeID" => "777", "ManagerEmployeeID" => "", "Manager Name" => "", ], [ "FirstName" => "Rik", "LastName" => "A.", "EmployeeID" => "622", "ManagerEmployeeID" => "777", "Manager Name" => "Billy Bob", ], [ "FirstName" => "Bob", "LastName" => "Small", "EmployeeID" => "111", "ManagerEmployeeID" => "622", "Manager Name" => "Rik A.", ], [ "FirstName" => "Small", "LastName" => "Jones", "EmployeeID" => "098", "ManagerEmployeeID" => "622", "Manager Name" => "Rik A", ], [ "FirstName" => "Eric", "LastName" => "C.", "EmployeeID" => "222", "ManagerEmployeeID" => "777", "Manager Name" => "Billy Bob", ]]; print_r($array);