I upgraded my server’s PHP to 5.6.20. After that, this is the following error I get. What should be done in order to resolve it?

I upgraded my server’s PHP to 5.6.20. After that, this is the follow

1.	I upgraded my server’s PHP to 5.6.20. After that, this is the following error I get. What should be done in order to resolve it?
Answer» If your CODEIGNITER version is prior to 2.2, then one can get this error. The ideal solution is to upgrade CI to LATEST. If that’s not possible then edit the core/Common.php file and make the following change: $_config[0] = & $config; RETURN $_config[0];