title: I can't fill a PDF form with pdftk-php
body: <p>I've created a PDF with form-fields. Now i want to fill out the PDF formular in PHP. I've tried pdftk-php, but when its return the PDF it's damaged. 
  What to do? It will be good with some examples :)</p>
  
  <pre><code>require('pdf/pdftk-class.php');
  
      $pdfmaker = new pdftk_php;
  
      $fields_hidden = array(); 
      $fdf_data_strings= array("co_navn" =&gt; "test");
      $fields_readonly = array(); 
  
      $pdf_filename = "test.pdf";
      $fdf_data_names = array();
      $pdf_original = "Indberetningsskema.pdf";
      $pdfmaker-&gt;make_pdf($fdf_data_strings, $fdf_data_names, $fields_hidden, $fields_readonly, $pdf_original, $pdf_filename);
  </code></pre>
  
  <p>// Thomas Bolander</p>