message: update pdo_prepare.php
diff: <?php
  -$db = new PDO("dbtype:host=127.0.0.1;dbname=test;charset=utf8", "root" ,"root");
  -$query=$db->prepare("Select * from table where id=?");
  -$query->excute(array($myinsecuredata));
  +$db = new PDO("mysql:host=127.0.0.1;dbname=test;charset=utf8", "root" ,"root");
  +$query = $db->prepare("select * from userinfo where id=?");
  +$rs = $query->execute(array(1));
  +var_dump($rs);
  +echo count($query->fetchAll());
  