Something

derick@kossu:/tmp$ cat unicode.php 
<?php
function blåbær_разработке()
{
        $thís= "this works";
        return $thís;
        }

echo blåbær_разработке(), "\n";
?>
derick@kossu:/tmp$ php-4.4dev -n unicode.php
this works
derick@kossu:/tmp$