CodeIgniter - Why does encrypting with the same key produce different results?

Question

I use codeigniter a lot, however I am not really understanding why when I use the encryption library in version 3 the encryption string never comes out the same, even using the

Answer 1

Try the md5 encryption its good and best till now. In controller before send password like this:

md5($this->input->post('password));

or use hash() or SHA256/SHA512 they do it well.

It will do the trick.

Enjoy!