What potential issues can arise when integrating multiple pages from a PDF using FPDI & FDPF in PHP?

One potential issue that can arise when integrating multiple pages from a PDF using FPDI & FPDF in PHP is the loss of formatting or layout inconsistencies between the original PDF pages and the merged PDF. To solve this issue, you can ensure that the page sizes and orientations are consistent across all PDF pages being merged. 

// Ensure consistent page sizes and orientations
$pdf = new FPDI();
$pdf->AddPage('Landscape', 'A4');
$pdf->setSourceFile('original.pdf');

// Merge multiple pages from original PDF
for ($i = 1; $i <= $pdf->setSourceFile('original.pdf'); $i++) {
    $templateId = $pdf->importPage($i);
    $size = $pdf->getTemplateSize($templateId);
    $pdf->AddPage($size['orientation'], $size['size']);
    $pdf->useTemplate($templateId);
}

$pdf->Output('merged.pdf', 'F');

Keywords

FPDI FPDF PDF integration PHP errors multiple pages

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