Description:
------------
same array variable($reqs) when it was assign value with &, then use foreach to loop it again, the last loop variable value was assigned failed.
please,see the simple test script below.

Test script:
---------------
    function foo() {
        $reqs = array('11', '22', array('id' => 123, 'name' => 'ffff'));
        foreach ($reqs as &$req) {
            if (is_array($req)) {
                $req['name'] = 'dd'; //alter value
            }
        }
        echo '<pre>';
        print_r($reqs); //values changed, ok
        echo '</pre>';
        foreach ($reqs as $req) {
            echo '<pre>';
            print_r($req); //the last value is '22', that is wrong.
            echo '</pre>';
        }
    }

output:
11
22
22  //it should be output this: array('id' => 123, 'name' => 'ffff')


Expected result:
----------------
expect output result:
11
22
Array
(
    [id] => 123
    [name] => ffff
)

Actual result:
--------------
11
22
22