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<title>PHPExcel Reader Example #11</title>



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<h1>PHPExcel Reader Example #11</h1>

<h2>Reading a Workbook in "Chunks" Using a Configurable Read Filter (Version 1)</h2>

<?php



/** Include path **/

set_include_path(get_include_path() . PATH_SEPARATOR . '../../../Classes/');



/** PHPExcel_IOFactory */

include 'PHPExcel/IOFactory.php';





$inputFileType = 'Excel5';

//	$inputFileType = 'Excel2007';

//	$inputFileType = 'Excel2003XML';

//	$inputFileType = 'OOCalc';

//	$inputFileType = 'Gnumeric';

$inputFileName = './sampleData/example2.xls';





/**  Define a Read Filter class implementing PHPExcel_Reader_IReadFilter  */

class chunkReadFilter implements PHPExcel_Reader_IReadFilter

{

	private $_startRow = 0;



	private $_endRow = 0;



	/**  We expect a list of the rows that we want to read to be passed into the constructor  */

	public function __construct($startRow, $chunkSize) {

		$this->_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,'<br />';

/**  Create a new Reader of the type defined in $inputFileType  **/

$objReader = PHPExcel_IOFactory::createReader($inputFileType);





echo '<hr />';





/**  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),'<br />';

	/**  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 '<br /><br />';

}





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