PHP warning creating default object from empty value problem solving method

PHP prompts creating default object from empty value of the problem, generally due to the PHP version of the upgrade reasons, PHP more than 5.4 version generally reported this error

The solution is to find the location of the error and then see which variable is not initialized and use it directly, and instantiate the variable first as an empty class. such as: The Code is as follows: $ct = new StdClass ();  Modify the corresponding code for the file, such as: The Code is as follows: if (! isset ($themes [$current _theme])) {delete_option (' current_theme '); $current _theme = Get_current_theme (); } $ct = new StdClass (); <!--Add this line--> $ct->name = $current _theme; Solve the problem.