protected function changeValueEncoding($value)
    {
        if (null !== $this->changeEncoding) {
            $value = call_user_func($this->changeEncoding, $value);
        }

        return $value;
    }
protected function changeValueEncoding($value)
    {
        if (null !== $this->changeEncoding) {
            $value = call_user_func($this->changeEncoding, $value);
        }

        return $value;
    }
protected function changeValueEncoding ( $ value ) { if ( null !== $ this -> changeEncoding ) { $ value = call_user_func ( $ this -> changeEncoding , $ value ) ; } return $ value ; }
Apply modifications to value before writing to excel cell

@param mixed $value
Apply modifications to value before writing to excel cell