Description:
------------
The Iterator interface (SPL) defines a method rewind(). When implementing e.g. ArrayIterator to allow array access to an object, one would expect that reset($object) would use the rewind method. This does not happen, but the first property is returned.

Reproduce code:
---------------
<?php

class testArray implements Iterator
{
    protected $prop = array(
        1 => 'one',
        2 => 'two',
        3 => 'three',
    );

    public function rewind()
    {
        return reset( $this->prop );
    }

    public function key()
    {
        return key( $this->prop );
    }

    public function current()
    {
        return current( $this->prop );
    }

    public function next()
    {
        return next( $this->prop );
    }

    public function valid()
    {
        return ( current( $this->prop ) !== false );
    }
}

$array = new testArray();

Expected result:
----------------
// Expected: string(3) "one"
var_dump( $array->rewind() );

// Expected: string(3) "one"
var_dump( reset( $array ) );


Actual result:
--------------
// As expected: string(3) "one"
var_dump( $array->rewind() );

// Expected: string(3) "one"
var_dump( reset( $array ) );
/* Got:
    array(3) {
      [1]=>
      string(3) "one"
      [2]=>
      string(3) "two"
      [3]=>
      string(5) "three"
    }
*/