Perform a case-insensitive match in FileUtil::extensionAllowsPhpExecution()

diff --git a/wcfsetup/install/files/lib/util/FileUtil.class.php b/wcfsetup/install/files/lib/util/FileUtil.class.php
index 4cc115f82d34b2dd8f43dc5dc7e1bc9034e49fc4..3a4410f1a2f419b37c4de0f8ec3f3dc754b8b4b5 100644 (file)
--- a/wcfsetup/install/files/lib/util/FileUtil.class.php
+++ b/wcfsetup/install/files/lib/util/FileUtil.class.php
@@ -746,7 +746,7 @@ final class FileUtil
      */
     public function extensionAllowsPhpExecution(string $extension): bool
     {
-        return !!\preg_match('/^\.?(php[0-9]*|phtml)$/', $extension);
+        return !!\preg_match('/^\.?(php[0-9]*|phtml)$/i', $extension);
     }
 
     /**