EasyXLS

Table.inc

<?php
$TABLE_MAX_ROWS_OFFICE_97_2003=65536;
$TABLE_MAX_COLUMNS_OFFICE_97_2003=256;
$TABLE_MAX_ROWS=1048576;
$TABLE_MAX_COLUMNS=16384;
$TABLE_MAX_COLUMN_WIDTH = 1792;
$TABLE_MAX_ROW_HEIGHT = 546;
$TABLE_LOOK_IN_FORMULAS=0;
$TABLE_LOOK_IN_VALUES=1;
$TABLE_LOOK_IN_COMMENTS=2;
?>

EasyXLS Excel components:

.NET
Excel Library for PHP
full COM+ version to import, export or convert Excel files
Excel Writer for PHP
COM+ version to create and export Excel files
Download EasyXLS™ Excel Component for PHP

File formats:

Office 365
MS Excel 2021 - 2024
MS Excel 2007 - 2019
MS Excel 97 - 2003
XLSXXLSMXLSBXLS
XMLHTMLCSVTXT