Description:
------------
Strange behaviour on float variable output after using setlocale() function.

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

setlocale(LC_NUMERIC, 'lt_LT');

$xxx = 19.48;
echo ($xxx) . "\n"; // Output float from variable
echo (19.48) . "\n"; // Output float directly
?>

Expected result:
----------------
19,48
19,48

Actual result:
--------------
19,48
19.48