Description:
------------
file created using file_get_contents() function differ in size on php6 with unicode switched on. The difference is 1.

Reproduce code:
---------------
<?php
$data = <<<EOT
<test>Testing fgetss() functions</test>
test
EOT;

$filename = "test.txt";
file_put_contents($filename, $data);
var_dump( filesize($filename) );
?>

Expected result:
----------------
int(44)

Actual result:
--------------
int(45)