phpspreadsheet phpoffice действительно поддерживает файлы .xls, что можно найти в столбце чтения таблицы на странице документации.
изменить 1:
В упомянутом пакете есть поддержка чтения в чанках:
This can be particularly useful for conserving memory, by allowing you to read and process a large workbook in "chunks": an example of this usage might be when transferring data from an Excel worksheet to a database.
$inputFileType = 'Xls';
$inputFileName = './sampleData/example2.xls';
/** Define a Read Filter class implementing \PhpOffice\PhpSpreadsheet\Reader\IReadFilter */
class ChunkReadFilter implements \PhpOffice\PhpSpreadsheet\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, $worksheetName = '') {
// Only read the heading row, and the configured rows
if (($row == 1) || ($row >= $this->startRow && $row < $this->endRow)) {
return true;
}
return false;
}
}
/** Create a new Reader of the type defined in $inputFileType **/
$reader = \PhpOffice\PhpSpreadsheet\IOFactory::createReader($inputFileType);
/** Define how many rows we want to read for each "chunk" **/
$chunkSize = 2048;
/** Create a new Instance of our Read Filter **/
$chunkFilter = new ChunkReadFilter();
/** Tell the Reader that we want to use the Read Filter **/
$reader->setReadFilter($chunkFilter);
/** Loop to read our worksheet in "chunk size" blocks **/
for ($startRow = 2; $startRow <= 65536; $startRow += $chunkSize) {
/** Tell the Read Filter which rows we want this iteration **/
$chunkFilter->setRows($startRow,$chunkSize);
/** Load only the rows that match our filter **/
$spreadsheet = $reader->load($inputFileName);
// Do some processing here
}
See samples/Reader/12_Reading_a_workbook_in_chunks_using_a_configurable_read_filter_ for a working example of this code.