Add Code in header.php

Hello, I have to add this code in header.php between body


<?php
global $seopilot;
define('SEOPILOT_USER', 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');
require_once($_SERVER['DOCUMENT_ROOT'].'/'.SEOPILOT_USER.'/SeoPilotClient.php');
$seopilot = new SeoPilotClient();
?>

but in my header.php i have no body tag, when i should add this code?

Can you help me?