Add php files

PDFMerger.php

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+<?php
+/**
+ *  PDFMerger created by Jarrod Nettles December 2009
+ *  jarrod@squarecrow.com
+ *  
+ *  v1.0
+ * 
+ * Class for easily merging PDFs (or specific pages of PDFs) together into one. Output to a file, browser, download, or return as a string.
+ * Unfortunately, this class does not preserve many of the enhancements your original PDF might contain. It treats
+ * your PDF page as an image and then concatenates them all together.
+ * 
+ * Note that your PDFs are merged in the order that you provide them using the addPDF function, same as the pages.
+ * If you put pages 12-14 before 1-5 then 12-15 will be placed first in the output.
+ * 
+ * 
+ * Uses FPDI 1.3.1 from Setasign
+ * Uses FPDF 1.6 by Olivier Plathey with FPDF_TPL extension 1.1.3 by Setasign
+ * 
+ * Both of these packages are free and open source software, bundled with this class for ease of use. 
+ * They are not modified in any way. PDFMerger has all the limitations of the FPDI package - essentially, it cannot import dynamic content
+ * such as form fields, links or page annotations (anything not a part of the page content stream).
+ * 
+ */
+class PDFMerger
+{
+	private $_files;	//['form.pdf']  ["1,2,4, 5-19"]
+	private $_fpdi;
+	
+	/**
+	 * Merge PDFs.
+	 * @return void
+	 */
+	public function __construct()
+	{
+		require_once('fpdf/fpdf.php');
+		require_once('fpdi/fpdi.php');
+	}
+	
+	/**
+	 * Add a PDF for inclusion in the merge with a valid file path. Pages should be formatted: 1,3,6, 12-16. 
+	 * @param $filepath
+	 * @param $pages
+	 * @return void
+	 */
+	public function addPDF($filepath, $pages = 'all')
+	{
+		if(file_exists($filepath))
+		{
+			if(strtolower($pages) != 'all')
+			{
+				$pages = $this->_rewritepages($pages);
+			}
+			
+			$this->_files[] = array($filepath, $pages);
+		}
+		else
+		{
+			throw new exception("Could not locate PDF on '$filepath'");
+		}
+		
+		return $this;
+	}
+	
+	/**
+	 * Merges your provided PDFs and outputs to specified location.
+	 * @param $outputmode
+	 * @param $outputname
+	 * @return PDF
+	 */
+	public function merge($outputmode = 'browser', $outputpath = 'newfile.pdf')
+	{
+		if(!isset($this->_files) || !is_array($this->_files)): throw new exception("No PDFs to merge."); endif;
+		
+		$fpdi = new FPDI;
+		
+		//merger operations
+		foreach($this->_files as $file)
+		{
+			$filename  = $file[0];
+			$filepages = $file[1];
+			
+			$count = $fpdi->setSourceFile($filename);
+			
+			//add the pages
+			if($filepages == 'all')
+			{
+				for($i=1; $i<=$count; $i++)
+				{
+					$template 	= $fpdi->importPage($i);
+					$size 		= $fpdi->getTemplateSize($template);
+					
+					$fpdi->AddPage('P', array($size['w'], $size['h']));
+					$fpdi->useTemplate($template);
+				}
+			}
+			else
+			{
+				foreach($filepages as $page)
+				{
+					if(!$template = $fpdi->importPage($page)): throw new exception("Could not load page '$page' in PDF '$filename'. Check that the page exists."); endif;
+					$size = $fpdi->getTemplateSize($template);
+					
+					$fpdi->AddPage('P', array($size['w'], $size['h']));
+					$fpdi->useTemplate($template);
+				}
+			}	
+		}
+		
+		//output operations
+		$mode = $this->_switchmode($outputmode);
+		
+		if($mode == 'S')
+		{
+			return $fpdi->Output($outputpath, 'S');
+		}
+		else
+		{
+			if($fpdi->Output($outputpath, $mode))
+			{
+				return true;
+			}
+			else
+			{
+				throw new exception("Error outputting PDF to '$outputmode'.");
+				return false;
+			}
+		}
+		
+		
+	}
+	
+	/**
+	 * FPDI uses single characters for specifying the output location. Change our more descriptive string into proper format.
+	 * @param $mode
+	 * @return Character
+	 */
+	private function _switchmode($mode)
+	{
+		switch(strtolower($mode))
+		{
+			case 'download':
+				return 'D';
+				break;
+			case 'browser':
+				return 'I';
+				break;
+			case 'file':
+				return 'F';
+				break;
+			case 'string':
+				return 'S';
+				break;
+			default:
+				return 'I';
+				break;
+		}
+	}
+	
+	/**
+	 * Takes our provided pages in the form of 1,3,4,16-50 and creates an array of all pages
+	 * @param $pages
+	 * @return unknown_type
+	 */
+	private function _rewritepages($pages)
+	{
+		$pages = str_replace(' ', '', $pages);
+		$part = explode(',', $pages);
+		
+		//parse hyphens
+		foreach($part as $i)
+		{
+			$ind = explode('-', $i);
+
+			if(count($ind) == 2)
+			{
+				$x = $ind[0]; //start page
+				$y = $ind[1]; //end page
+				
+				if($x > $y): throw new exception("Starting page, '$x' is greater than ending page '$y'."); return false; endif;	
+				
+				//add middle pages
+				while($x <= $y): $newpages[] = (int) $x; $x++; endwhile;
+			}
+			else
+			{
+				$newpages[] = (int) $ind[0];
+			}
+		}
+		
+		return $newpages;
+	}
+	
+}