Sonata\Exporter\Source\CsvSourceIterator::next PHP Method

    public function next()
    {
        $line = fgetcsv($this->file, 0, $this->delimiter, $this->enclosure, $this->escape);
        $this->currentLine = $line;
        ++$this->position;
        if ($this->hasHeaders && is_array($line)) {
            $data = array();
            foreach ($line as $key => $value) {
                $data[$this->columns[$key]] = $value;
            }
            $this->currentLine = $data;
        }
    }