Setting the global default style will affect the style of all written cells;
Function prototype
defaultFormat(resource $formatHandler)
resource $formatHandler
cell style
Example
$config = ['path'=>'./tests'];$excel =new\Vtiful\Kernel\Excel($config);$excel->fileName('tutorial.xlsx');$format =new\Vtiful\Kernel\Format($excel->getHandle());$colorOneStyle = $format->fontColor(\Vtiful\Kernel\Format::COLOR_ORANGE)->border(\Vtiful\Kernel\Format::BORDER_DASH_DOT)->toResource();$format =new\Vtiful\Kernel\Format($excel->getHandle());$colorTwoStyle = $format->fontColor(\Vtiful\Kernel\Format::COLOR_GREEN)->toResource();$filePath = $excel// Apply the first style as the default->defaultFormat($colorOneStyle)->header(['hello','xlswriter'])// Apply the second style as the default style->defaultFormat($colorTwoStyle)->data([ ['hello','xlswriter'], ])->output();