start bbs轻论坛安装时数据库提示错误

A PHP Error was encountered
Severity: Notice
Message: Only variable references should be returned by reference
Filename: core/Common.php
Line Number: 257

解决方法：

找到system/core目录下的Common.php文件的257行把

return $_config[0] =& $config; 

改为

$_config[0] =& $config;return $_config[0];