Description:
------------
First element of array of the SplInt values corrupted after array iterated.

Normal behavior with internal int:

$a = [1,2,3];
foreach($a as $k => $v) {}
var_dump($a); // $a[0] = 1, ok.

Bug with SplInt:

$a = [new \SplInt(1), new \SplInt(2), new \SplInt(3)];
foreach($a as $k => $v) {}
var_dump($a); // $a[0] = 3, but must be 1

The same situation with SplFloat.

SPL_Types version: 0.4.0 stable

Tested on PHP versions:
5.5.12 (Linux)
5.5.18 (Linux)
5.4.29 (Windows)

Test script:
---------------
class SplTypesTest extends PHPUnit_Framework_TestCase
{
    public function testSplInt()
    {
        $a = [new \SplInt(1), new \SplInt(2), new \SplInt(3)];
        foreach($a as $k => $v) {}
        $this->assertEquals(1, (int)$a[0]); // 3!
    }

    public function testSplFloat()
    {
        $a = [new \SplFloat(1.0), new \SplFloat(2.0), new \SplFloat(3.0)];
        foreach($a as $k => $v) {}
        $this->assertEquals(1.0, (float)$a[0]); // 3!
    }
}


Expected result:
----------------
Passing test.

Actual result:
--------------
PHPUnit 3.7.28 by Sebastian Bergmann.

F

Time: 283 ms, Memory: 2.75Mb

There was 1 failure:

1) SplIntTest::test1
Failed asserting that 3 matches expected 1.

/home/alex/webdev/test/SplIntTest.php:9

FAILURES!
Tests: 1, Assertions: 1, Failures: 1.