112 lines
3.7 KiB
PHP
112 lines
3.7 KiB
PHP
<?php
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use PhpOffice\PhpSpreadsheet\IOFactory;
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use PhpOffice\PhpSpreadsheet\Reader\IReadFilter;
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use PhpOffice\PhpSpreadsheet\Spreadsheet;
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error_reporting(E_ALL);
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set_time_limit(0);
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date_default_timezone_set('Europe/London');
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?>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>PhpSpreadsheet Reader Example #14</title>
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</head>
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<body>
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<h1>PhpSpreadsheet Reader Example #14</h1>
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<h2>Reading a Large CSV file in "Chunks" to split across multiple Worksheets</h2>
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<?php
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require_once __DIR__ . '/../../../src/Bootstrap.php';
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$inputFileType = 'Csv';
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$inputFileName = './sampleData/example2.csv';
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/** Define a Read Filter class implementing IReadFilter */
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class chunkReadFilter implements IReadFilter
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{
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private $_startRow = 0;
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private $_endRow = 0;
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/**
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* Set the list of rows that we want to read.
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*
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* @param mixed $startRow
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* @param mixed $chunkSize
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*/
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public function setRows($startRow, $chunkSize)
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{
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$this->_startRow = $startRow;
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$this->_endRow = $startRow + $chunkSize;
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}
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public function readCell($column, $row, $worksheetName = '')
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{
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// Only read the heading row, and the rows that are configured in $this->_startRow and $this->_endRow
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if (($row == 1) || ($row >= $this->_startRow && $row < $this->_endRow)) {
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return true;
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}
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return false;
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}
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}
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echo 'Loading file ',pathinfo($inputFileName, PATHINFO_BASENAME),' using IOFactory with a defined reader type of ',$inputFileType,'<br />';
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/* Create a new Reader of the type defined in $inputFileType **/
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$reader = IOFactory::createReader($inputFileType);
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echo '<hr />';
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/* Define how many rows we want to read for each "chunk" **/
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$chunkSize = 100;
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/* Create a new Instance of our Read Filter **/
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$chunkFilter = new chunkReadFilter();
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/* Tell the Reader that we want to use the Read Filter that we've Instantiated **/
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/* and that we want to store it in contiguous rows/columns **/
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$reader->setReadFilter($chunkFilter)
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->setContiguous(true);
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/* Instantiate a new PhpSpreadsheet object manually **/
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$spreadsheet = new Spreadsheet();
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/* Set a sheet index **/
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$sheet = 0;
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/* Loop to read our worksheet in "chunk size" blocks **/
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/** $startRow is set to 2 initially because we always read the headings in row #1 **/
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for ($startRow = 2; $startRow <= 240; $startRow += $chunkSize) {
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echo 'Loading WorkSheet #', ($sheet + 1), ' using configurable filter for headings row 1 and for rows ', $startRow, ' to ', ($startRow + $chunkSize - 1), '<br />';
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/* Tell the Read Filter, the limits on which rows we want to read this iteration **/
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$chunkFilter->setRows($startRow, $chunkSize);
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/* Increment the worksheet index pointer for the Reader **/
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$reader->setSheetIndex($sheet);
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/* Load only the rows that match our filter into a new worksheet in the PhpSpreadsheet Object **/
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$reader->loadIntoExisting($inputFileName, $spreadsheet);
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/* Set the worksheet title (to reference the "sheet" of data that we've loaded) **/
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/* and increment the sheet index as well **/
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$spreadsheet->getActiveSheet()->setTitle('Country Data #' . (++$sheet));
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}
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echo '<hr />';
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echo $spreadsheet->getSheetCount(), ' worksheet', (($spreadsheet->getSheetCount() == 1) ? '' : 's'), ' loaded<br /><br />';
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$loadedSheetNames = $spreadsheet->getSheetNames();
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foreach ($loadedSheetNames as $sheetIndex => $loadedSheetName) {
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echo '<b>Worksheet #', $sheetIndex, ' -> ', $loadedSheetName, '</b><br />';
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$spreadsheet->setActiveSheetIndexByName($loadedSheetName);
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$sheetData = $spreadsheet->getActiveSheet()->toArray(null, false, false, true);
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var_dump($sheetData);
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echo '<br />';
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}
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?>
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<body>
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</html>
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