public function tempnam(): string
    {
        $root = $this->getFsRoot();
        do {
            ++$this->fsCounter;
            $name = $root.'/'.$this->fsCounter;
        } while (file_exists($name));

        return $name;
    }
public function tempnam(): string
    {
        $root = $this->getFsRoot();
        do {
            ++$this->fsCounter;
            $name = $root.'/'.$this->fsCounter;
        } while (file_exists($name));

        return $name;
    }
public function tempnam ( ) : string { $ root = $ this -> getFsRoot ( ) ; do { ++ $ this -> fsCounter ; $ name = $ root . '/' . $ this -> fsCounter ; } while ( file_exists ( $ name ) ) ; return $ name ; }
Get unique filename.
Get unique filename .