Fatal error: Call to undefined function in database.php
//Decode base64
function decod($string){
  $string = base64_decode($string);
  return ($string);
}

//Data double-coded with base64, just to prevent people reading
$host = "localhost";
$user = decod(DOUBLE_ENCRYPTED_USERNAME);
$pass = decod(DOUBLE_ENCRYPTED_PASSWORD);
$db = decod(DOUBLE_ENCRYPTED_DATABASE);

//Connect or print error
$con = mysql_connect($host, decod($user), decod($pass));
if (!$con)
{
    die('Could not connect: ' . mysql_error());
}
//Select database
mysql_select_db(decod($db), $con);

function_exists ( string $function_name )