mysqli new mysqli хост юзер пасс база flag true do num rand 100 mysqli

<?
$mysqli = new mysqli('хост', 'юзер', 'пасс', 'база');
$flag = true;
do {
    $num = rand(1, 100);
    $q = $mysqli->fetch_assoc($mysqli->query("SELECT COUNT(uniq_number) AS pizda FROM huj WHERE uniq_number = '$num'"));
    if($q['pizda'] == 0){
        $flag = false;
        $mysqli->query("INSERT INTO huj (uniq_number) VALUES ('$num')");
    }
}while($flag);
?>