[TikiWiki-commits] [Git][tikiwiki/tiki][master] [FIX] mPDF - Anchor links work in the browser but not when exported to a PDF

Jonny Bradley pushed to branch master at Tiki Wiki CMS Groupware / Tiki


Commits:
39b9cfa3 by Domeshow Emmanuel at 2025-09-25T11:10:50+00:00
[FIX] mPDF - Anchor links work in the browser but not when exported to a PDF
---
* [FIX] mPDF - Anchor links work in the browser but not when exported to a PDF

See merge request tikiwiki/tiki!8533

- - - - -


1 changed file:

- lib/pdflib.php


Changes:

=====================================
lib/pdflib.php
=====================================
@@ -495,6 +495,9 @@ class PdfGenerator
             }
         }
 
+        // Insert <a name="id"></a> immediately before each element with an id
+        $html = $this->addNamedAnchorsBeforeIdTags($html);
+
         $pdfPages = $this->getPDFPages($html, $pdfSettings);
         //adding css styles with first page content
         $allCss = '<style>' .
@@ -733,6 +736,29 @@ class PdfGenerator
         return $mpdf->Output('', 'S');                  // Return as a string
     }
 
+    public function addNamedAnchorsBeforeIdTags(string $html): string
+    {
+        $dom = new DOMDocument();
+        libxml_use_internal_errors(true);
+        $dom->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
+
+        $xpath = new DOMXPath($dom);
+        $nodes = $xpath->query('//*[@id]'); // all elements with an id
+
+        foreach ($nodes as $node) {
+            $id = $node->getAttribute('id');
+
+            // Create <a name="id"></a>
+            $a = $dom->createElement("a");
+            $a->setAttribute("name", $id);
+
+            // Insert it just before the node with the id
+            $node->parentNode->insertBefore($a, $node);
+        }
+
+        return $dom->saveHTML();
+    }
+
     public function getHtmlLayout($pageContent)
     {
         require_once('tiki-setup.php');



View it on GitLab: https://gitlab.com/tikiwiki/tiki/-/commit/39b9cfa3b61abc2256e02156eb51746e5274f027

-- 
View it on GitLab: https://gitlab.com/tikiwiki/tiki/-/commit/39b9cfa3b61abc2256e02156eb51746e5274f027
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