first second
Array ( )
<form method="get">
    <input type="text" name="test[text][first]">
    <input type="radio" name="test[radio]" value="first">first
    <input type="radio" name="test[radio]" value="second">second
    <input type="submit" value="Submit">
</form>
<xmp><?print_r($_GET)?></xmp>
<hr><?show_source(__FILE__)?>