How can one effectively merge cells in Excel files using PEAR Spreadsheet_Excel_Writer in PHP?

To merge cells in Excel files using PEAR Spreadsheet_Excel_Writer in PHP, you can use the mergeCells() method provided by the library. This method takes in the starting row and column, as well as the ending row and column of the cells you want to merge. This allows you to create merged cells in your Excel file for better formatting and organization.

// Include the PEAR Spreadsheet_Excel_Writer library
require_once 'Spreadsheet/Excel/Writer.php';

// Create a new Excel workbook
$workbook = new Spreadsheet_Excel_Writer();

// Add a worksheet to the workbook
$worksheet =& $workbook->addWorksheet('Sheet1');

// Merge cells A1 to C1
$worksheet->mergeCells(0, 0, 0, 2);

// Set the value of the merged cell
$worksheet->write(0, 0, 'Merged Cells');

// Save the Excel file
$workbook->send('merged_cells_example.xls');
$workbook->close();