PHP Decode

--TEST--
Test posix_getgrgid().
--CREDITS--
Till Klampaeckel, [email protected]
TestFest Berlin 2009
--EXTENSIONS--
posix
--FILE--
<?php
$grp = posix_getgrgid(0);
if (!isset($grp['name'])) {
    die('Array index "name" does not exist.');
}
if (!isset($grp['passwd'])) {
    die('Array index "passwd" does not exist.');
}
if (!isset($grp['members'])) {
    die('Array index "members" does not exist.');
} elseif (!is_array($grp['members'])) {
    die('Array index "members" must be an array.');
} else {
    if (count($grp['members']) > 0) {
        foreach ($grp['members'] as $idx => $username) {
            if (!is_int($idx)) {
                die('Index in members Array is not an int.');
            }
            if (!is_string($username)) {
                die('Username in members Array is not of type string.');
            }
        }
    }
}
if (!isset($grp['gid'])) {
    die('Array index "gid" does not exist.');
}
var_dump($grp['gid']);
?>
--EXPECT--
int(0)