Split PDF to individual pages using FPDI and FPDF

gistfile1.php

<?php

/**
 * Split PDF file
 *
 * <p>Split all of the pages from a larger PDF files into
 * single-page PDF files.</p>
 *
 * @package FPDF required http://www.fpdf.org/
 * @package FPDI required http://www.setasign.de/products/pdf-php-solutions/fpdi/
 * @param string $filename The filename of the PDF to split
 * @param string $end_directory The end directory for split PDF (original PDF's directory by default)
 * @return void
 */
function split_pdf($filename, $end_directory = false)
{
	require_once('fpdf/fpdf.php');
	require_once('fpdi/fpdi.php');
	
	$end_directory = $end_directory ? $end_directory : './';
	$new_path = preg_replace('/[\/]+/', '/', $end_directory.'/'.substr($filename, 0, strrpos($filename, '/')));
	
	if (!is_dir($new_path))
	{
		// Will make directories under end directory that don't exist
		// Provided that end directory exists and has the right permissions
		mkdir($new_path, 0777, true);
	}
	
	$pdf = new FPDI();
	$pagecount = $pdf->setSourceFile($filename); // How many pages?
	
	// Split each page into a new PDF
	for ($i = 1; $i <= $pagecount; $i++) {
		$new_pdf = new FPDI();
		$new_pdf->AddPage();
		$new_pdf->setSourceFile($filename);
		$new_pdf->useTemplate($new_pdf->importPage($i));
		
		try {
			$new_filename = $end_directory.str_replace('.pdf', '', $filename).'_'.$i.".pdf";
			$new_pdf->Output($new_filename, "F");
			echo "Page ".$i." split into ".$new_filename."<br />\n";
		} catch (Exception $e) {
			echo 'Caught exception: ',  $e->getMessage(), "\n";
		}
	}
}

// Create and check permissions on end directory!
split_pdf("filename.pdf", 'split/');

?>

Note that free version of FPDI only works with PDF versions up to 1.4 - see https://www.setasign.com/products/fpdi-pdf-parser/details/

@janzankowski here's some messy solution I've come with to that: https://gist.github.com/ilkermutlu/c38a72ecb60a1a9d65983b2528d5e69e

how to split for some range of pdf

Splitted pages are truncated, only the top left of the original document appears

how to set in codeigniter?

Set Adjust page size : true

$new_pdf->useTemplate($new_pdf->importPage($i), adjustPageSize: true);

FPDI can only handle PDF document up to PDF ver 1.4. Be careful when sett source pdf file.