Internal: Fix PDF export formatting and encoding issues for exercise results - refs BT#22053

public/main/exercise/exercise_report.php

@@ -699,7 +699,7 @@ if ($is_allowedToEdit || $is_tutor) {
         ['name' => 'duration', 'index' => 'exe_duration', 'width' => '150', 'align' => 'left', 'search' => 'true'],
         ['name' => 'start_date', 'index' => 'start_date', 'width' => '150', 'align' => 'left', 'search' => 'true'],
         ['name' => 'exe_date', 'index' => 'exe_date', 'width' => '150', 'align' => 'left', 'search' => 'true'],
-        ['name' => 'score', 'index' => 'score', 'width' => '100', 'align' => 'center', 'search' => 'true'],
+        ['name' => 'score', 'index' => 'score', 'width' => '120', 'align' => 'center', 'search' => 'true'],
         ['name' => 'ip', 'index' => 'user_ip', 'width' => '120', 'align' => 'center', 'search' => 'true'],
         [
             'name' => 'status',
@@ -721,7 +721,7 @@ if ($is_allowedToEdit || $is_tutor) {
             ],
         ],
         ['name' => 'lp', 'index' => 'orig_lp_id', 'width' => '150', 'align' => 'left', 'search' => 'false'],
-        ['name' => 'actions', 'index' => 'actions', 'width' => '120', 'align' => 'left', 'search' => 'false', 'sortable' => 'false'],
+        ['name' => 'actions', 'index' => 'actions', 'width' => '180', 'align' => 'left', 'search' => 'false', 'sortable' => 'false'],
     ];
 
     if ('true' === $officialCodeInList) {

public/main/inc/lib/pdf.lib.php

@@ -137,6 +137,10 @@ class PDF
             }
         }
 
+        if (!empty($this->params['session_info']['title'])) {
+            $this->params['session_info']['title'] = preg_replace('/[\x{2600}-\x{26FF}]/u', '', $this->params['session_info']['title']);
+        }
+
         $tpl->assign('pdf_course', $this->params['course_code']);
         $tpl->assign('pdf_course_info', $this->params['course_info']);
         $tpl->assign('pdf_session_info', $this->params['session_info']);
@@ -413,7 +417,7 @@ class PDF
         $basicStyles = [];
 
         $doc = new DOMDocument();
-        @$doc->loadHTML($document_html);
+        @$doc->loadHTML('<?xml encoding="UTF-8">' . $document_html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
 
         $linksToRemove = [];
 
@@ -476,7 +480,7 @@ class PDF
             $document_html
         );
         $document_html = str_replace(api_get_path(WEB_ARCHIVE_PATH), api_get_path(SYS_ARCHIVE_PATH), $document_html);
-
+        $document_html = str_replace('<?xml encoding="UTF-8">', '', $document_html);
         // The library mPDF expects UTF-8 encoded input data.
         api_set_encoding_html($document_html, 'UTF-8');
         // At the moment the title is retrieved from the html document itself.