Strict standard error in PHP

While working on one of clients website after migration from PHP 5.3 to PHP 5.6

I would see the error on “[01-Jul-2016 02:18:54 America/Chicago] PHP Strict Standards:  Declaration of Countries::getAttribute() should be compatible with CActiveRecord”

On googling around I could see the issue was fixed by making changing few settings in php.ini

Add & ~E_STRICT to the end of the active error reporting line. For example, if your current setting is:

You would change it to read:

and restart httpd

This will fix the issue.