How to convert string to php function call?

Question

PHP

Essence of the question. The PHP class has a load_function method that takes a string variable as an argument - the name of the method, how can it be fashionable to make functions (methods) run simply by converting their name into a call in autoload mode, without checking the contents of the variable?

public function load_function($function_name){
       // здесь необходимо написать код 
       // который преобразует строковую переменную $function_name в вызов функции
    }

Answer 1

If I understood the question correctly, then php.net/manual/en/function.call-user-func.php