Required php 5.4 - Provide access layer to private properties via anonymous functions

PrivateAccess.php

<?php

class TestClass
{
    private  $someVar;

    public function __construct()
    {
        $this->someVar = 10;

    }
}

$testObj = new TestClass();

$someVarGetter = function () {
    return $this->someVar;
};

$someVarGetter = $someVarGetter->bindTo($testObj, $testObj);

echo $someVarGetter(); // 10