Description:
------------
Result of "example 1" in the French documentation of "ob_get_clean" is wrong.
Case and length are incorrect.

Reproduce code:
---------------
<?php

ob_start();

echo "Bonjour le monde !";

$out = ob_get_clean();
$out = strtolower($out);

var_dump($out);
?>


Expected result:
----------------
string(18) "bonjour le monde !"

Actual result:
--------------
string(11) "Bonjour le monde !"