<?php
$people = array();
$number = 10;

if ( isset($_COOKIE['teaCookie']) ) {
    $people = unserialize(stripcslashes($_COOKIE["teaCookie"]));
}

if ( isset($_GET['people']) ) {
    $people = $_GET['people'];
    setcookie("teaCookie", serialize($people));
}
?>
<form method="get" action="">
<?php
for ( $i=0 ; $i<$number ; $i++ ) {
    if ( isset($people[$i]) ) {
        echo '<input type="text" name="people[]" value="'.$people[$i].'" /><br />';        
    } else {
        echo '<input type="text" name="people[]" value="" /><br />';    
    }
}
?>
<input type="submit" value="Save &amp; Run" name="submit" />
</form>
<?php
if ( isset($_COOKIE['teaCookie']) || isset($_GET['people']) ) { 
    ?><p><a href="<?php echo $_SERVER['PHP_SELF']; ?>">Pick Again!</a></p><?php
}
?>
<?php
$who = array_rand(array_filter($people));
if ( $who >= 0 ) {
    $teaMaker = $people[$who];
    echo '<p>'.$teaMaker.' will be making the tea!</p>';
}
?>