├── blank.html
├── Procfile
├── .buildpacks
└── index.php


/blank.html:
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1 | 


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/Procfile:
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1 | web: sh boot.sh
2 | 


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/.buildpacks:
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1 | https://github.com/heroku/heroku-buildpack-php.git
2 | https://github.com/benweet/heroku-buildpack-wkhtmltopdf.git
3 | 


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/index.php:
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 1 | <?php
 2 |     error_reporting(E_ALL);
 3 |     ini_set('display_errors', 1);
 4 |     
 5 |     header("Cache-Control: no-cache, must-revalidate");
 6 |     header("Expires: Sat, 26 Jul 1997 05:00:00 GMT");
 7 |     
 8 |     header('Access-Control-Allow-Origin: *');
 9 |     header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
10 |     header('Access-Control-Allow-Headers: content-type, page-size');
11 |     
12 |     if ($_SERVER['REQUEST_METHOD'] === 'POST') {
13 |         
14 |         $headers = apache_request_headers();
15 |         $pageSize = "A4";
16 |         if(isset($headers["page-size"])) {
17 |             $pageSize = $headers["page-size"];
18 |         }
19 |         
20 |         $descriptorspec = array(
21 |                                 0 => array("pipe", "r"),  // stdin is a pipe that the child will read from
22 |                                 1 => array("pipe", "w"),  // stdout is a pipe that the child will write to
23 |                                 2 => array("file", "/dev/null", "w") // stderr is a file to write to
24 |                                 );
25 |         
26 |         $process = proc_open('/app/bin/fakesu -c wkhtmltopdf -L 25 -R 25 -T 25 -B 25 --page-size '.$pageSize.' --header-html /app/www/blank.html --header-spacing 5 --footer-html /app/www/blank.html --footer-spacing 5 --javascript-delay 2000 - -', $descriptorspec, $pipes);
27 |         
28 |         if (is_resource($process)) {
29 |             $input = fopen('php://input', 'r');
30 |             while (!feof($input)) {
31 |                 fwrite($pipes[0], fread($input, 8192));
32 |             }
33 |             
34 |             fclose($pipes[0]);
35 |             echo stream_get_contents($pipes[1]);
36 |             fclose($pipes[1]);
37 |             
38 |             $return_value = proc_close($process);
39 |             
40 |         }
41 |     }
42 | 


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