mysql gone wrong again

this time its num_rows
$sql_email_check = mysql_query("SELECT email FROM users
WHERE email='$email' AND status='Alive'");
$sql_username_check = mysql_query("SELECT username FROM users
WHERE username='$reg_username'");

$email_check = mysql_num_rows($sql_email_check);
$username_check = mysql_num_rows($sql_username_check);

If you added mysql error to the end of the query, you'll know what's wrong.


$sql_username_check = mysql_query("SELECT username FROM users
WHERE username='$reg_username'") or die(mysql_error());