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2023-01-30 08:01:11 +01:00
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--- a/PHPExcel/Documentation/Examples/Reader/exampleReader14.php
+++ b/PHPExcel/Documentation/Examples/Reader/exampleReader14.php
@ -0,0 +1,105 @@
+<?php
+
+?>
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
+
+<title>PHPExcel Reader Example #15</title>
+
+</head>
+<body>
+
+<h1>PHPExcel Reader Example #14</h1>
+<h2>Reading a Large CSV file in "Chunks" to split across multiple Worksheets</h2>
+<?php
+
+/** Include path **/
+set_include_path(get_include_path() . PATH_SEPARATOR . '../../../Classes/');
+
+/** PHPExcel_IOFactory */
+include 'PHPExcel/IOFactory.php';
+
+
+$inputFileType = 'CSV';
+$inputFileName = './sampleData/example2.csv';
+
+/**  Define a Read Filter class implementing PHPExcel_Reader_IReadFilter  */
+class chunkReadFilter implements PHPExcel_Reader_IReadFilter
+{
+	private $_startRow = 0;
+
+	private $_endRow = 0;
+
+	/**  Set the list of rows that we want to read  */
+	public function setRows($startRow, $chunkSize) {
+		$this->_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,'<br />';
+/**  Create a new Reader of the type defined in $inputFileType  **/
+$objReader = PHPExcel_IOFactory::createReader($inputFileType);
+
+
+echo '<hr />';
+
+
+/**  Define how many rows we want to read for each "chunk"  **/
+$chunkSize = 100;
+/**  Create a new Instance of our Read Filter  **/
+$chunkFilter = new chunkReadFilter();
+
+/**  Tell the Reader that we want to use the Read Filter that we've Instantiated  **/
+/**    and that we want to store it in contiguous rows/columns  **/
+$objReader->setReadFilter($chunkFilter)
+		  ->setContiguous(true);
+
+
+/**  Instantiate a new PHPExcel object manually  **/
+$objPHPExcel = 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),'<br />';
+	/**  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  **/
+    $objReader->setSheetIndex($sheet);
+	/**  Load only the rows that match our filter into a new worksheet in the PHPExcel Object  **/
+    $objReader->loadIntoExisting($inputFileName,$objPHPExcel);
+    /**  Set the worksheet title (to reference the "sheet" of data that we've loaded)  **/
+    /**    and increment the sheet index as well  **/
+    $objPHPExcel->getActiveSheet()->setTitle('Country Data #'.(++$sheet));
+}
+
+
+echo '<hr />';
+
+echo $objPHPExcel->getSheetCount(),' worksheet',(($objPHPExcel->getSheetCount() == 1) ? '' : 's'),' loaded<br /><br />';
+$loadedSheetNames = $objPHPExcel->getSheetNames();
+foreach($loadedSheetNames as $sheetIndex => $loadedSheetName) {
+	echo '<b>Worksheet #',$sheetIndex,' -> ',$loadedSheetName,'</b><br />';
+	$objPHPExcel->setActiveSheetIndexByName($loadedSheetName);
+	$sheetData = $objPHPExcel->getActiveSheet()->toArray(null,false,false,true);
+	var_dump($sheetData);
+	echo '<br />';
+}
+
+?>
+<body>
+</html>