Website setting

[Arnii]

Hello, ive got the website for my ep BlackFire prenium,everything is working but when im about to register an account it saaid:

 

Notice: Undefined index: root in C:\xampp\htdocs\page\page_register.php on line 30

Notice: Undefined index: in C:\xampp\htdocs\page\page_register.php on line 30

Notice: Undefined index: user in C:\xampp\htdocs\page\page_register.php on line 34

Notice: Undefined index: db in C:\xampp\htdocs\page\page_register.php on line 34

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\page\page_register.php on line 86

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\page\page_register.php on line 87

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\page\page_register.php on line 88

Strict Standards: Only variables should be passed by reference in C:\xampp\htdocs\page\page_register.php on line 89

 

If someone have a idea about how to fixe it?please

 

Setting atm :

 
    // Dont change below here unless u know what u are doing -------------------------------------------------------------------
   
   
 
    $conf[db][dsn] = sprintf("mysql:host=%s;dbname=%s", $conf[db][db], $conf[][data1]);
   
    try
    {
        $db = new PDO($conf[db][dsn], $conf[db][user], $conf[db][db]);
    }
    catch(PDOException $e)
    {
        die(Error connecting to the database<br />Registration is not possible at this moment.);