Export multiple records to PDF one by one from Excel

 Sub ExportRangeToPDF()

    For a = 3 To 10

        Sheet1.Range("D4").Value = Sheet2.Cells(a, "A")

        Sheet1.ExportAsFixedFormat Type:=xlTypePDF, Filename:="C:\Users\Naeem\OneDrive\Desktop\PrintingPDF\" & Sheet1.Range("D4").Value & ".pdf", Quality:=xlQualityStandard, IncludeDocProperties:=True, IgnorePrintAreas:=False, OpenAfterPublish:=False

    Next

End Sub

How to change the default filename when using mPDF

$payStub=new mPDF();

$payStub->SetTitle('My title');
$payStub->WriteHTML($pcTableRows);
$payStub->Output('yourFileName.pdf', 'I');

1. 'D': download the PDF file
2. 'I': serves in-line to the browser
3. 'S': returns the PDF document as a string
4. 'F': save as file $file_out