While downloading the PDF from standard portrait mode to landscape mode, first of all you need to set the style in % (no hard coding of width or height). Then make an object of mpdf class.
This is how we created the object :
$mpdf=new mPDF('c', 'A4-L'); “-L” is used to force the Landscape page orientation of document. mPDF can accept a lot more arguments as listed below :
$mpdf = new mPDF ( '', // mode - default '' '',// format - A4, for example, default '' 0,// font size - default 0 '',// default font family 15,// margin_left 15,// margin right 16,// margin top 16,// margin bottom 9, // margin header 9, // margin footer 'L'// L - landscape, P - portrait );
Pass the necessary parameters and values as per your requirement.