EllisLab/CodeIgniter — pull request #2244 by WDC (2013-02-13 17:00:07+00:00)
Title: Get array of all POST data with set_value()

This allows the user to pass a NULL value to `set_value()` in order to receive an array of all the POST data that was validated.

Use it like this:

`print_r(set_value(NULL));`
Gives you
Array
(
[name] => David Marshall Lemcoe Jr.
[data] => More data
)

This mirrors the functionality of `$this->input->post(NULL);`