Codeigniter 升级php5.6提示Only variable references should be returned by reference 解决方法

phpEnv运行php项目报错：

A PHP Error was encountered
Severity: Notice

Message: Only variable references should be returned by reference

Filename: core/Common.php

Line Number: 256

解决方法

进入system/core,修改Comm.php 256行

修改前

return $_config[0] =& $config;
1

修改后

$_config[0] =& $config; return $_config[0];
1

原文链接：
https://www.jianshu.com/p/d7f61b60baa2