Loading PDF file to open journal system page (TCPDF,FPDI)

Hello everyone,

I have my own script for editing the PDF - out of OJS, I load file, and after I call a script, it succesfuly edit my PDF.

I’m working on plugin for OJS, and I’m trying to figure out a problem, that when I place the script into the OJS journal, I get this error:

Fatal error: Uncaught exception 'InvalidArgumentException' with message 'Cannot open TestClanek.pdf !' in C:\xampp\htdocs\ojs245\pages\stamp\pdf_parser.php:192 Stack trace: #0 C:\xampp\htdocs\ojs245\pages\stamp\fpdi_pdf_parser.php(71): pdf_parser->__construct('TestClanek.pdf') #1 C:\xampp\htdocs\ojs245\pages\stamp\fpdi.php(128): fpdi_pdf_parser->__construct('TestClanek.pdf') #2 C:\xampp\htdocs\ojs245\pages\stamp\fpdi.php(108): FPDI->_getPdfParser('TestClanek.pdf') #3 C:\xampp\htdocs\ojs245\pages\stamp\class.php(12): FPDI->setSourceFile('TestClanek.pdf') #4 C:\xampp\htdocs\ojs245\pages\stamp\lib\tcpdf\tcpdf.php(3543): PDF->Header() #5 C:\xampp\htdocs\ojs245\pages\stamp\lib\tcpdf\tcpdf.php(3210): TCPDF->setHeader() #6 C:\xampp\htdocs\ojs245\pages\stamp\lib\tcpdf\tcpdf.php(3122): TCPDF->startPage('', '', false) #7 [internal function]: TCPDF->AddPage() #8 C:\xampp\htdocs\ojs245\pages\stamp\fpdf_tpl.php(367): call_user_func_array(Array, Array) #9 C:\xampp\htdocs\ojs245\pages\stamp\lib\tcpdf\tcpdf.php(2962): FPDF_TPL->AddPage() in C:\xampp\htdocs\ojs245\pages\stamp\pdf_parser.php on line 192

I Understand, that there is problem with loading a file (pass the NULL), but i’m not able to find out, where is the problem). Could anyone help me? Here is my code of app:


class StampHandler extends Handler {
    function stampingOperation($args, $request) {
        $templateMgr = TemplateManager::getManager($request);
        require_once('lib/tcpdf/tcpdf.php'); //$_SERVER['DOCUMENT_ROOT'].
        require_once('fpdi.php'); //$_SERVER['DOCUMENT_ROOT'].
                // initiate PDF
                $pdf = new PDF();
                $pdf->fullPathToFile = "TestClanek.pdf";
                if($pdf->numPages>1) {
                    for($i=2;$i<=$pdf->numPages;$i++) {
                        $pdf->_tplIdx = $pdf->importPage($i);
                    $file_time = time();
                    $pdf->Output("$file_time.pdf", "F");//, "I"); 
                    echo "Link - edited PDF: '<a href=$file_time.pdf>Edited file</a>'";      }

and class.php

  class PDF extends FPDI {
var $_tplIdx;
var $fullPathToFile;

  function Header() {
                if(is_null($this->_tplIdx)) {
                $this->numPages = $this->setSourceFile($this->fullPathToFile);
                $this->_tplIdx = $this->importPage(1);
                if($this->page > 1) {
                    $this->SetFont('helvetica', 'I', 10); 
                    $this->Write(15, "Cislo: 1, autor 2 cislo 3\n");
                    $this->Image('logo.png', 100, 2, 75,7);            
                } //end IF
      $this->useTemplate($this->_tplIdx, 0, 0,200);
    }           //end HEADER
  }        //end CLASS

It works as expected, when i ran the script out of OJS. Thanks a lot for help!


I’ve changed the absolute path to to the file, and it works now. Is it necessary to use absolute path?

Hi @duff,

No, it shouldn’t be necessary to use an absolute path. You should be able to use a path relative to the OJS installation’s base directory.

Alec Smecher
Public Knowledge Project Team