<?php
include("defcon.php");

$user = $_GET['user'];
$pass = $_GET['pass'];
$email = $_GET['email'];

/*Check to see if user is registered*/
if(isset($user,$pass)){
$array = mysql_query("select * from knowledge");
while($ar = mysql_fetch_array($array)){
$check = $ar['user'];
if($check == $user){
echo "User already exists!";
exit(0);
  }
}
$query = $dbh->prepare("insert into knowledge(user,passw) values(:user,md5(:pass))");
$query->bindParam(':name',$user);
$query->bindParam(':pass',$pass);
$query->execute();
echo "Query executed";
}