Как передать массив через GET запрос?

$templates = array('modern', 'smartphone');

echo http_build_query(array(
    'user' => array(
        'name' => 'Bob Smith',
        'age'  => 47,
        'sex'  => 'M',
        'dob'  => '5/12/1956'
    ),
    'pastimes' => array('golf', 'opera', 'poker', 'rap'),
    'children' => array(
        'bobby' => array('age'=>12, 'sex'=>'M'),
        'sally' => array('age'=>8, 'sex'=>'F')
    ),
    'CEO'
));

 parse_str('user%5Bname%5D=Bob+Smith&user%5Bage%5D=47&user%5Bsex%5D=M&user%5Bdob%5D=5%2F12%2F1956&pastimes%5B0%5D=golf&pastimes%5B1%5D=opera&pastimes%5B2%5D=poker&pastimes%5B3%5D=rap&children%5Bbobby%5D%5Bage%5D=12&children%5Bbobby%5D%5Bsex%5D=M&children%5Bsally%5D%5Bage%5D=8&children%5Bsally%5D%5Bsex%5D=F&0=CEO', $result);
var_export ($result);

$url = 'index.php?' . http_build_query(array(
    'templates' => array(
        'name' => 'Bob Smith',
        'age'  => 47,
        'sex'  => 'M',
        'dob'  => '5/12/1956'
    )
));

//index.php?templates=modern,smartphone
if(isset($_GET['templates']))
{
    $templates=$_GET['templates'];
    $temp=explode(',', $templates);
    foreach ($temp as $item)
    {
    if(isset($item) && trim($item) !='') echo $item.', ';
 
    }
 
}

$url = 'index.php?' . http_build_query(array(
    'templates' => array(
        'name' => 'Bob Smith',
        'age'  => 47,
        'sex'  => 'M',
        'dob'  => '5/12/1956'
    )
));

ECHO '<PRE>';
var_export($_GET);
ECHO '</PRE>';

print_r($_GET['templates']['sex']);