How can one troubleshoot and resolve issues related to cell merging not working in PEAR Spreadsheet_Excel_Writer in PHP?

To troubleshoot and resolve issues related to cell merging not working in PEAR Spreadsheet_Excel_Writer in PHP, you can ensure that the cells you are trying to merge are adjacent to each other and that you are using the correct syntax for merging cells. Additionally, make sure that you are setting the correct parameters for the mergeCells() function.

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

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

// Merge cells A1 to B1
$worksheet->mergeCells(0, 0, 0, 1, 'Merged Cell');

// Set the width of the merged cells
$worksheet->setColumn(0, 1, 20);

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