Description:
------------
Reference problems

Reproduce code:
---------------
<?php
$matches = array(
    array('one0', 'two0', 'three0'),
    array('one1', 'two1', 'three1'),
    array('one2', 'two2', 'three2'),
    array('one3', 'two3', 'three3'),
    array('one4', 'two4', 'three4'),
);
foreach($matches as $key=>&$value)
{
}

foreach($matches as $value)
{
    echo $value[0] . PHP_EOL;
}

Expected result:
----------------
one0
one1
one2
one3
one4

Actual result:
--------------
one0
one1
one2
one3
one3