HTML form input field with comma separated

Question

I am trying to figure out how to take multiple word input in a single text box in a form with each word separated by comma(,) and then paring the word based on comma and inserti

Answer 1

$str = $_POST['words'];
$piece = explode(',',$str);
foreach($piece as $substr){
    mysql_query("INSERT INTO test (words) VALUES ('".$substr."');";
}