Function assistance

All, I am having a small issue which is making me bang my head against a wall. I am running XAMMP with PHP 5.4 installed and this worked before uploading to my live dev site. The part of the function that doesn't seem to be working is :

        $pdo = $this->connection();
        $sql = "UPDATE memeber SET vcode=:vcode WHERE loginName=:loginName and email=:email";
        $q = $pdo->prepare($sql);
        $q->execute(array(':vcode' => $vcode, ':loginName' => $loginName, ':email' => $email));

I have tried the SQL statement direct into PHPMyAdmin, replacing the :name holders with true data, and it worked. But trying the above script fails to update. Am i missing something completely here? -- Best Regards, Gavin Chalkley MSTC WES7