What are some common pitfalls when comparing PageNo() and AliasNbPages in FPDF?

When comparing PageNo() and AliasNbPages in FPDF, a common pitfall is not taking into account the fact that PageNo() starts counting from 1 while AliasNbPages includes the total number of pages. To accurately compare the current page number with the total number of pages, you need to subtract 1 from AliasNbPages before making the comparison. 

$pdf = new FPDF();
$pdf->AddPage();
$totalPages = $pdf->AliasNbPages();
for ($i = 1; $i <= $totalPages; $i++) {
    $pdf->AddPage();
    $currentPage = $pdf->PageNo();
    
    if ($currentPage == $totalPages - 1) {
        $pdf->Cell(0, 10, 'Second to last page', 0, 1);
    }
}
$pdf->Output();

Keywords

FPDF PageNo() AliasNbPages comparison pagination

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