PHPExcel Reader Example #14
Reading a Large CSV file in "Chunks" to split across multiple Worksheets
_startRow = $startRow;
$this->_endRow = $startRow + $chunkSize;
}
public function readCell($column, $row, $worksheetName = '')
{
// Only read the heading row, and the rows that are configured in $this->_startRow and $this->_endRow
if (($row == 1) || ($row >= $this->_startRow && $row < $this->_endRow)) {
return true;
}
return false;
}
}
echo 'Loading file ',pathinfo($inputFileName, PATHINFO_BASENAME),' using IOFactory with a defined reader type of ',$inputFileType,'
';
/* Create a new Reader of the type defined in $inputFileType **/
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
echo '
';
/* Define how many rows we want to read for each "chunk" **/
$chunkSize = 100;
/* Create a new Instance of our Read Filter **/
$chunkFilter = new chunkReadFilter();
/* Tell the Reader that we want to use the Read Filter that we've Instantiated **/
/* and that we want to store it in contiguous rows/columns **/
$reader->setReadFilter($chunkFilter)
->setContiguous(true);
/* Instantiate a new PHPExcel object manually **/
$spreadsheet = new PHPExcel();
/* Set a sheet index **/
$sheet = 0;
/* Loop to read our worksheet in "chunk size" blocks **/
/** $startRow is set to 2 initially because we always read the headings in row #1 **/
for ($startRow = 2; $startRow <= 240; $startRow += $chunkSize) {
echo 'Loading WorkSheet #', ($sheet + 1), ' using configurable filter for headings row 1 and for rows ', $startRow, ' to ', ($startRow + $chunkSize - 1), '
';
/* Tell the Read Filter, the limits on which rows we want to read this iteration **/
$chunkFilter->setRows($startRow, $chunkSize);
/* Increment the worksheet index pointer for the Reader **/
$reader->setSheetIndex($sheet);
/* Load only the rows that match our filter into a new worksheet in the PHPExcel Object **/
$reader->loadIntoExisting($inputFileName, $spreadsheet);
/* Set the worksheet title (to reference the "sheet" of data that we've loaded) **/
/* and increment the sheet index as well **/
$spreadsheet->getActiveSheet()->setTitle('Country Data #' . (++$sheet));
}
echo '
';
echo $spreadsheet->getSheetCount(), ' worksheet', (($spreadsheet->getSheetCount() == 1) ? '' : 's'), ' loaded
';
$loadedSheetNames = $spreadsheet->getSheetNames();
foreach ($loadedSheetNames as $sheetIndex => $loadedSheetName) {
echo 'Worksheet #', $sheetIndex, ' -> ', $loadedSheetName, '
';
$spreadsheet->setActiveSheetIndexByName($loadedSheetName);
$sheetData = $spreadsheet->getActiveSheet()->toArray(null, false, false, true);
var_dump($sheetData);
echo '
';
}
?>