improve create date of files

themes/beauty/views/site/index.php

@@ -227,9 +227,9 @@ eof;
                 }
 
                 $title = !empty($file['title']) ? $file['title'] : $file['filename'];
-                //图片、视频显示文件创建日期
-                if (!empty($file['fstat']['ctime'])) {
-                    $title = date('Y-m-d', $file['fstat']['ctime']);
+                //图片、视频显示文件修改日期
+                if (!empty($file['fstat']['mtime']) && !empty($file['fstat']['ctime'])) {
+                    $title = date('Y-m-d', min($file['fstat']['mtime'], $file['fstat']['ctime']));
                 }
 
                 if ($index > 0) {