vendor/dompdf/dompdf/src/PhpEvaluator.php

   1 <?php
   2 /**
   3  * @package dompdf
   4  * @link    http://dompdf.github.com/
   5  * @author  Benj Carson <benjcarson@digitaljunkies.ca>
   6  * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
   7  */
   8 namespace Dompdf;
   9
  10 /**
  11  * Executes inline PHP code during the rendering process
  12  *
  13  * @package dompdf
  14  */
  15 class PhpEvaluator
  16 {
  17
  18     /**
  19      * @var Canvas
  20      */
  21     protected $_canvas;
  22
  23     /**
  24      * PhpEvaluator constructor.
  25      * @param Canvas $canvas
  26      */
  27     public function __construct(Canvas $canvas)
  28     {
  29         $this->_canvas = $canvas;
  30     }
  31
  32     /**
  33      * @param $code
  34      * @param array $vars
  35      */
  36     public function evaluate($code, $vars = array())
  37     {
  38         if (!$this->_canvas->get_dompdf()->getOptions()->getIsPhpEnabled()) {
  39             return;
  40         }
  41
  42         // Set up some variables for the inline code
  43         $pdf = $this->_canvas;
  44         $fontMetrics = $pdf->get_dompdf()->getFontMetrics();
  45         $PAGE_NUM = $pdf->get_page_number();
  46         $PAGE_COUNT = $pdf->get_page_count();
  47
  48         // Override those variables if passed in
  49         foreach ($vars as $k => $v) {
  50             $$k = $v;
  51         }
  52
  53         eval($code);
  54     }
  55
  56     /**
  57      * @param Frame $frame
  58      */
  59     public function render(Frame $frame)
  60     {
  61         $this->evaluate($frame->get_node()->nodeValue);
  62     }
  63 }