session_start() en ob_start()

<?php
ob_start();
session_start();
?>

<?php
ob_start();
session_start();
?>

<?php
session_start();
ob_start();
?>

<?php
session_start();
ob_start();
?>

<?php
session_start();
ob_start();
?>

<?php
session_start();
ob_start();
?>

hallo
<?php
session_start();
ob_start();
?>

hallo
<?php
session_start();
ob_start();
?>

<?php
echo "hallo";
session_start();
ob_start();
?>

<?php
echo "hallo";
session_start();
ob_start();
?>

<?php

   session_start();

   echo 'Hoera! Ik heb nu geen ob_start() gebruikt!';

?>

<?php
 
   session_start();
 
   echo 'Hoera! Ik heb nu geen ob_start() gebruikt!';
 
?>

<?php
ob_start();

echo "Iets";
setcookie('iets', 'iets');
?>

<?php
ob_start();
 
echo "Iets";
setcookie('iets', 'iets');
?>

<?php
$var = 1;

if($var < 1)
     exit();

session_start();
?>

<?php
$var = 1;
 
if($var < 1)
     exit();
 
session_start();
?>