new appraoch

pancake/system/vendor/pancakeapp/dompdf/src/PhpEvaluator.php

@@ -0,0 +1,62 @@
+<?php
+/**
+ * @package dompdf
+ * @link    https://github.com/dompdf/dompdf
+ * @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
+ */
+namespace Dompdf;
+
+/**
+ * Executes inline PHP code during the rendering process
+ *
+ * @package dompdf
+ */
+class PhpEvaluator
+{
+
+    /**
+     * @var Canvas
+     */
+    protected $_canvas;
+
+    /**
+     * PhpEvaluator constructor.
+     * @param Canvas $canvas
+     */
+    public function __construct(Canvas $canvas)
+    {
+        $this->_canvas = $canvas;
+    }
+
+    /**
+     * @param $code
+     * @param array $vars
+     */
+    public function evaluate($code, $vars = [])
+    {
+        if (!$this->_canvas->get_dompdf()->getOptions()->getIsPhpEnabled()) {
+            return;
+        }
+
+        // Set up some variables for the inline code
+        $pdf = $this->_canvas;
+        $fontMetrics = $pdf->get_dompdf()->getFontMetrics();
+        $PAGE_NUM = $pdf->get_page_number();
+        $PAGE_COUNT = $pdf->get_page_count();
+
+        // Override those variables if passed in
+        foreach ($vars as $k => $v) {
+            $$k = $v;
+        }
+
+        eval($code);
+    }
+
+    /**
+     * @param Frame $frame
+     */
+    public function render(Frame $frame)
+    {
+        $this->evaluate($frame->get_node()->nodeValue);
+    }
+}