What are potential bugs to look out for when applying styles across multiple worksheets in PHPExcel?

When applying styles across multiple worksheets in PHPExcel, potential bugs to look out for include incorrect cell references, styles not being applied consistently, and styles being overridden by conflicting formatting. To solve these issues, ensure that you are referencing the correct cells and worksheets when applying styles, use named styles to ensure consistency, and be mindful of the order in which styles are applied to avoid conflicts.

// Example code snippet to apply a style across multiple worksheets in PHPExcel

// Create a new PHPExcel object
$objPHPExcel = new PHPExcel();

// Set a style for a cell
$style = array(
    'font' => array('bold' => true),
    'alignment' => array('horizontal' => PHPExcel_Style_Alignment::HORIZONTAL_CENTER)
);

// Apply the style to cell A1 in all worksheets
foreach ($objPHPExcel->getWorksheetIterator() as $worksheet) {
    $worksheet->getStyle('A1')->applyFromArray($style);
}