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I must know..
is
$this->form_validation->set_value('first_name')
the same as
$this->input->post('first_name')
?
They both seem to get the input value. Is the first one more secure if I’m validating inputs?
set_value()is used to re-populate a form once it has failed validation. There is no additional filtering on it, so you should use$this->input->post()if you have no need to pass the value back to the form.