PHP Control Statement Help Needed

[st_rage]

Hi...I am building a page that displays random questions to visitors. At the first page, the user will enter his email n be directed to another page where a random question from the database will b given. if the same email address is entered, the question that was given will not be repeated n other question will b given instead.

all the questions n answers r stored in the database with a unique id.

so far this is what i hv done.

extract ($_POST);

$id = rand(1, 14); //generate random id for random question

$query = ("SELECT * FROM email WHERE email = $email");

//check db for the email and if exist, which question was given previously

if (($query['email'] == $email) && ($query['no']==$id))
{

//if email exist and the id generated is same as 'no' in db, a new
//random id will b generated until it is unique. max is only 14, so
// when the max is reached, error msg pops out.

}

//if email does not exist in db...a random question will be given

else {
$query = ("INSERT INTO email VALUES ('$id', '$email')");
$result = mysql_query($query);
$resQ = mysql_fetch_array(mysql_query("SELECT * FROM question WHERE qid = $id"));
$resA = mysql_fetch_array(mysql_query("SELECT * FROM answer WHERE aid = $id"));
echo $resQ['quest']."<br/>";
}

?>

i hope i'm not confusing u guys. do advice