Description:
------------
when use printf with <?=printf
the output is not identical at older version of php

Now the printf send the true string, but add after the nombre of send caractere.

the documentation of printf retur void et not the nombre of caractere send.

Reproduce code:
---------------
<?
        for($i=0; $i<=4; $i++)
        {
?>
my line <?=printf("%02d<br>",$i) ?>
<?php

        }
?>

Expected result:
----------------
with old version printf not send nombre of caractere write on flux.

Actual result:
--------------
my line 00
6my line 01
6my line 02
6my line 03
6my line 04
6