If you want to select any one from the lists, use this coding
Code:
<form method="post">
<input type="radio" name="item_list" value="hi"> hi
<br>
<input type="radio" name="item_list" value="hello"> hello
<br>
<input type="radio" name="item_list" value="how_are_you"> how are you
</form>
<?PHP
$_POST['item_list']
?>