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Use wkhtmltopdf to print html into pdf (PHP level)

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Wkhtmltopdf (http://code.google.com/p/wkhtmltopdf/) is a open source html to pdf converter. This snippet shows how to use it in a php script.

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  1. // content var
  2. $content = 'content';
  3.  
  4. // generate pdf from contents
  5. $file_name = 'example.pdf';
  6.  
  7. $descriptorspec = array(
  8.    0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
  9.    1 => array("file", "./generated/$file_name", 'a'),  // stdout is a pipe that the child will write to
  10. );
  11.  
  12. // wkhtmltopdf must be in PATH var!
  13. $process = proc_open('wkhtmltopdf - -', $descriptorspec, $pipes );
  14.  
  15. if (is_resource($process)) {
  16.     // $pipes now looks like this:
  17.     // 0 => writeable handle connected to child stdin
  18.     // 1 => readable handle connected to child stdout
  19.     // Any error output will be appended to /tmp/error-output.txt
  20.  
  21.     fwrite($pipes[0], $content);
  22.     fclose($pipes[0]);
  23.  
  24.     // echo stream_get_contents($pipes[1]);
  25.     // fclose($pipes[1]);
  26.  
  27.     // It is important that you close any pipes before calling
  28.     // proc_close in order to avoid a deadlock
  29.     $return_value = proc_close($process);
  30.  
  31.     echo "command returned $return_value\n";
  32. }

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