W33 - zápis obsahu

<?php
 /*první sada dat*/
 $achname   = $_POST['achname'];
 $achpoints = $_POST['achpoints'];
 $achdesc   = $_POST['achdesc'];
 $creatorid = $_SESSION["uid"];
 /*parametry*/
 $query     = $dbh->query('SELECT COUNT(*) FROM params');
 $query->execute();
 $result     = $query->fetchColumn();
 $paramcount = $result;
 /*tohle tu bejt musí, jinak se to zacyklí! Nejde to tam nasolit rovnou, zkoušel jsem to, není mi úplně jasný proč, any hints?*/
 for ($i = 1; $i <= $paramcount; $i++) {
     if (isset($_POST[$i])) {
         $paramsstring = $paramsstring . $i . "=" . $_POST[$i] . ",";
     }
 }
 /*validation id, protože mysql neumí dva AI v jedný tabulce...*/
 $query = $dbh->prepare("SELECT MAX(vid) FROM validation");
 $query->execute();
 $result = $query->fetchAll();
 $nvid   = (($result[0][0]) + 1);
 /*tak to tam vrazíme:*/
 try {
     $query = $dbh->prepare("INSERT INTO achievements (name, points, description, creatorid, paramids, validationid) VALUES (:name, :points, :description, :creatorid, :paramids, :validationid)");
     $query->bindParam(':name', $achname, PDO::PARAM_STR, 255);
     $query->bindParam(':points', $achpoints, PDO::PARAM_INT, 4);
     $query->bindParam(':creatorid', $creatorid, PDO::PARAM_INT, 7);
     $query->bindParam(':validationid', $nvid, PDO::PARAM_INT, 20);
     $query->bindParam(':description', $achdesc, PDO::PARAM_STR, 12000);
     $query->bindParam(':paramids', $paramsstring, PDO::PARAM_STR, 6000);
     $query->execute();
 }
 catch (PDOException $e) {
     echo $e->getMessage();
 }
?>