Split large page in more view

In that case, what you suggested is possible indeed:

PHP Code:

$this->load->view('page/page1', $data);
$this->load->view('page/page2', $data);
etc. 


How this would help you to find errors more easily, isn't clear to me. Does it matter if you get an error message that says: error on line 1500 of 'page1', instead of line 3000 of 'page' ?? In both cases, it's obvious where to look, isn't it? Provided that you are using a code editor with line numbers, of course.
If you need 4000 lines of code for a view file, I'm affraid you're doing something basically wrong. How did you end up with such a large php file?