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Merge, copy, delete and rearrange PDF pages in PHP

Sample PHP code for using PDFTron SDK to copy pages from one document to another, delete and rearrange pages, and use ImportPages() method for very efficient copy and merge operations. Learn more about our PDF Editing & Manipulation Library.

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<?php
//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2019 by PDFTron Systems Inc. All Rights Reserved.
// Consult LICENSE.txt regarding license information.
//---------------------------------------------------------------------------------------
include("../../../PDFNetC/Lib/PDFNetPHP.php");

// Relative path to the folder containing the test files.
$input_path = getcwd()."/../../TestFiles/";
$output_path = $input_path."Output/";

	PDFNet::Initialize();

	// Sample 1 - Split a PDF document into multiple pages
	
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 1 - Split a PDF document into multiple pages...\n");
	echo nl2br("Opening the input pdf...\n");
	$in_doc = new PDFDoc($input_path."newsletter.pdf");
	$in_doc->InitSecurityHandler();

	$page_num = $in_doc->GetPageCount();
	for ($i = 1; $i <= $page_num; ++$i)
	{	
		$new_doc = new PDFDoc();
		$new_doc->InsertPages(0, $in_doc, $i, $i, PDFDoc::e_none);
		$new_doc->Save($output_path."newsletter_split_page_".$i.".pdf", SDFDoc::e_remove_unused);
		echo nl2br("Done. Result saved in newsletter_split_page_".$i.".pdf...\n");
		$new_doc->Close();
	}
	$in_doc->Close();

	// Sample 2 - Merge several PDF documents into one
	
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 2 - Merge several PDF documents into one...\n");
	$new_doc = new PDFDoc();
	$new_doc->InitSecurityHandler();

	$page_num = 15;
	for ($i = 1; $i <= $page_num; ++$i)
	{	
		echo nl2br("Opening newsletter_split_page_".$i.".pdf...\n");
		$in_doc = new PDFDoc($output_path."newsletter_split_page_".$i.".pdf");
		$new_doc->InsertPages($i, $in_doc, 1, $in_doc->GetPageCount(), PDFDoc::e_none);
		$in_doc->Close();
	}
	$new_doc->Save($output_path."newsletter_merge_pages.pdf", SDFDoc::e_remove_unused);
	echo nl2br("Done. Result saved in newsletter_merge_pages.pdf...\n");
	$in_doc->Close();

	// Sample 3 - Delete every second page
	
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 3 - Delete every second page...\n");
	echo nl2br("Opening the input pdf...\n");
	$in_doc = new PDFDoc($input_path."newsletter.pdf");
	$in_doc->InitSecurityHandler();
		
	$page_num = $in_doc->GetPageCount();
	while ($page_num>=1)
	{
		$itr = $in_doc->GetPageIterator($page_num);
		$in_doc->PageRemove($itr);
		$page_num -= 2;
	}		
		
	$in_doc->Save($output_path."newsletter_page_remove.pdf", 0);
	echo nl2br("Done. Result saved in newsletter_page_remove.pdf...\n");

	//Close the open document to free up document memory sooner than waiting for the
	//garbage collector
	$in_doc->Close();

	// Sample 4 - Inserts a page from one document at different 
	// locations within another document
		 
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 4 - Insert a page at different locations...\n");
	echo nl2br("Opening the input pdf...\n");
		
	$in1_doc = new PDFDoc($input_path."newsletter.pdf");
	$in1_doc->InitSecurityHandler();

	$in2_doc = new PDFDoc($input_path."fish.pdf");
	$in2_doc->InitSecurityHandler(); 
		
	$src_page = $in2_doc->GetPageIterator();
    $dst_page = $in1_doc->GetPageIterator();
	$page_num = 1;
    while ($dst_page->HasNext()) {
        if ($page_num++ % 3 == 0) {
            $in1_doc->PageInsert($dst_page, $src_page->Current());
        }
        $dst_page->Next();
    }
	
	$in1_doc->Save($output_path."newsletter_page_insert.pdf", 0);
	echo nl2br("Done. Result saved in newsletter_page_insert.pdf...\n");

	//Close the open document to free up document memory sooner than waiting for the
	//garbage collector
	$in1_doc->Close();
	$in2_doc->Close();

	// Sample 5 - Replicate pages within a single document
	
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 5 - Replicate pages within a single document...\n");
	echo nl2br("Opening the input pdf...\n");
	$doc = new PDFDoc($input_path."newsletter.pdf");
	$doc->InitSecurityHandler();
		
	// Replicate the cover page three times (copy page #1 and place it before the 
	// seventh page in the document page sequence)
	$cover = $doc->GetPage(1);
	$p7 = $doc->GetPageIterator(7);
	$doc->PageInsert($p7, $cover);
	$doc->PageInsert($p7, $cover);
	$doc->PageInsert($p7, $cover);
		
	// Replicate the cover page two more times by placing it before and after
	// existing pages.
	$doc->PagePushFront($cover);
	$doc->PagePushBack($cover);
		
	$doc->Save($output_path."newsletter_page_clone.pdf", 0);
	echo nl2br("Done. Result saved in newsletter_page_clone.pdf...\n");
	$doc->Close();

	// Sample 6 - Use ImportPages() in order to copy multiple pages at once 
	// in order to preserve shared resources between pages (e.g. images, fonts, 
	// colorspaces, etc.)
	
	echo nl2br("_______________________________________________\n");
	echo nl2br("Sample 6 - Preserving shared resources using ImportPages...\n");
	echo nl2br("Opening the input pdf...\n");
	$in_doc = new PDFDoc($input_path."newsletter.pdf");
	$in_doc->InitSecurityHandler();

	$new_doc = new PDFDoc();
	
	$copy_pages = new VectorPage(); 
	for ($itr=$in_doc->GetPageIterator(); $itr->HasNext(); $itr->Next())
	{
		$copy_pages->push($itr->Current());
	}
		
	$imported_pages = $new_doc->ImportPages($copy_pages);
	for ($i=0; $i<$imported_pages->size(); ++$i)
	{
		$new_doc->PagePushFront($imported_pages->get($i)); // Order pages in reverse order. 
		// Use PagePushBack() if you would like to preserve the same order.
	}		
		
	$new_doc->Save($output_path."newsletter_import_pages.pdf", 0);
	echo nl2br("Done. Result saved in newsletter_import_pages.pdf...\n\n"
		."Note that the output file size is less than half the size\n" 
		."of the file produced using individual page copy operations\n" 
		."between two documents\n");
?>
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