CFile::setBasename PHP Method

    public function setBasename($basename = null)
    {
        if ($this->getIsFile()) {
            if ($this->getIsUploaded()) {
                $this->addLog('setBasename() is unavailable for uploaded files. Please copy/move uploaded file from temporary directory', 'warning');
                return False;
            }
            if ($this->getWriteable() && $basename && $this->rename($basename)) {
                return $this;
            }
            $this->addLog('Unable to set file basename "' . $basename . '"');
            return False;
        }
        $this->addLog('setBasename() is available only for files', 'warning');
        return False;
    }