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<title>PHPExcel Reader Example #15</title>
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<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 />';
}
?>
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