PHP 7 FPDI Library Example to Merge & Concatenate Multiple PDF Documents into One in Browser.
<?php use setasign\Fpdi\Fpdi; require_once('fpdf/fpdf.php'); require_once('fpdi2/src/autoload.php'); class ConcatPdf extends Fpdi { public $files = array(); public function setFiles($files) { $this->files = $files; } public function concat() { foreach($this->files AS $file) { $pageCount = $this->setSourceFile($file); for ($pageNo = 1; $pageNo <= $pageCount; $pageNo++) { $pageId = $this->ImportPage($pageNo); $s = $this->getTemplatesize($pageId); $this->AddPage($s['orientation'], $s); $this->useImportedPage($pageId); } } } } $pdf = new ConcatPdf(); $pdf->setFiles(array('Boombastic-Box.pdf', 'Fantastic-Speaker.pdf', 'Noisy-Tube.pdf')); $pdf->concat(); $pdf->Output('I', 'concat.pdf');
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