[BUGFIX] Fix undefined array key warning in HtmlParser

Resolves: #97095 Releases: main, 11.5 Change-Id: I783dab0b2d16d8071a2ecd061083a580f77533b2 Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/73780 Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de> Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch> Tested-by: core-ci <typo3@b13.com> Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
TYPO3 · Mar 4, 2022 · 99f8576 · 99f8576
1 parent d31ea25
commit 99f8576
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/typo3/sysext/core/Classes/Html/HtmlParser.php b/typo3/sysext/core/Classes/Html/HtmlParser.php
@@ -529,7 +529,7 @@ public function HTMLcleaner($content, $tags = [], $keepAll = 0, $hSC = 0, $addCo
                                                 // Classes are case sensitive
                                                 if ($attr === 'class') {
                                                     $newClasses = [];
-                                                    $classes = GeneralUtility::trimExplode(' ', $tagAttrib[0][$attr], true);
+                                                    $classes = GeneralUtility::trimExplode(' ', $tagAttrib[0][$attr] ?? '', true);
                                                     foreach ($classes as $class) {
                                                         if (in_array($class, $params['list'])) {
                                                             $newClasses[] = $class;
@@ -541,7 +541,7 @@ public function HTMLcleaner($content, $tags = [], $keepAll = 0, $hSC = 0, $addCo
                                                         $tagAttrib[0][$attr] = $params['list'][0];
                                                     }
                                                 } else {
-                                                    if (!in_array($this->caseShift($tagAttrib[0][$attr], $params['casesensitiveComp'] ?? false), (array)$this->caseShift($params['list'], $params['casesensitiveComp'], $tagName))) {
+                                                    if (!in_array($this->caseShift($tagAttrib[0][$attr] ?? '', $params['casesensitiveComp'] ?? false), (array)$this->caseShift($params['list'], $params['casesensitiveComp'], $tagName))) {
                                                         $tagAttrib[0][$attr] = $params['list'][0];
                                                     }
                                                 }