获得错误的插件是WP Download Manager
错误：
Strict Standards: Only variables should be passed by reference in /home/otbm/public_html/wp-content/plugins/download-manager/functions.php on line 1879
第1879行：
if(count($vars['files'])==1) $vars['file_ext'] = end($tmpdata = explode(".", $vars['files'][0]));
也在管理员中收到此错误：
Strict Standards: Only variables should be passed by reference in /home/otbm/public_html/wp-content/plugins/download-manager/wpdm.php(1) : eval()'d code on line 1034
我无法找到该行，因为它只是一行代码。
任何帮助将不胜感激。