PHPExcel Reader Example #11
Reading a Workbook in "Chunks" Using a Configurable Read Filter (Version 1)
_startRow	= $startRow;
		$this->_endRow		= $startRow + $chunkSize;
	}
	public function readCell($column, $row, $worksheetName = '') {
		//  Only read the heading row, and the rows that were configured in the constructor
		if (($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  **/
$objReader = PHPExcel_IOFactory::createReader($inputFileType);
echo '
';
/**  Define how many rows we want for each "chunk"  **/
$chunkSize = 20;
/**  Loop to read our worksheet in "chunk size" blocks  **/
for ($startRow = 2; $startRow <= 240; $startRow += $chunkSize) {
	echo 'Loading WorkSheet using configurable filter for headings row 1 and for rows ',$startRow,' to ',($startRow+$chunkSize-1),'
';
	/**  Create a new Instance of our Read Filter, passing in the limits on which rows we want to read  **/
	$chunkFilter = new chunkReadFilter($startRow,$chunkSize);
	/**  Tell the Reader that we want to use the new Read Filter that we've just Instantiated  **/
	$objReader->setReadFilter($chunkFilter);
	/**  Load only the rows that match our filter from $inputFileName to a PHPExcel Object  **/
	$objPHPExcel = $objReader->load($inputFileName);
	//	Do some processing here
	$sheetData = $objPHPExcel->getActiveSheet()->toArray(null,true,true,true);
	var_dump($sheetData);
	echo '
';
}
?>