Description:
------------
ext/standard/tests/strings/bug38770.phpt fails on an i686 machine

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

foreach (array('N','I','l') as $v) {
        print_r(unpack($v, pack($v, -30000)));
}

echo "Done\n";
?>

Expected result:
----------------
(as per the test)
Array
(
    [1] => 4294937296
)
Array
(
    [1] => -30000
)
Array
(
    [1] => -30000
)
Done

Actual result:
--------------
Array
(
    [1] => -30000
)
Array
(
    [1] => -30000
)
Array
(
    [1] => -30000
)
Done