修复语言检测未匹配时的错误

优化分片上传

application/common/library/Upload.php

@@ -305,7 +305,7 @@ class Upload
 
             $attachment = $this->upload();
         } catch (\Exception $e) {
-            @unlink($destFile);
+            @unlink($uploadPath);
             throw new UploadException($e->getMessage());
         }
         return $attachment;

application/common/view/tpl/think_exception.tpl

@@ -19,7 +19,7 @@ if (isset($_GET['lang'])) {
     $langSet = strtolower($_COOKIE['think_var']);
 } elseif (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
 preg_match('/^([a-z\d\-]+)/i', $_SERVER['HTTP_ACCEPT_LANGUAGE'], $matches);
-    $langSet     = strtolower($matches[1]);
+    $langSet     = strtolower($matches[1] ?? '');
 }
 $langSet = $langSet && in_array($langSet, ['zh-cn', 'en']) ? $langSet : 'zh-cn';
 $langSet == 'en' && $lang = array_combine(array_keys($lang), array_keys($lang));