dynamic input fields validation in codeigniter

You can still use the input posts during validation. For instance you can do something like:

PHP Code:

// Expecting this one
$this->form_validation->set_rules('ID1_first_name', 'First Name', 'trim|required|max_length[50]');

// Optionally might be submitted ones
if($this->input->post(ID2_first_name) $this->form_validation->set_rules('ID2_first_name', 'First Name', 'trim|required|max_length[50]');
if($this->input->post(ID3_first_name) $this->form_validation->set_rules('ID3_first_name', 'First Name', 'trim|required|max_length[50]');
if($this->input->post(ID4_first_name) $this->form_validation->set_rules('ID4_first_name', 'First Name', 'trim|required|max_length[50]');
if($this->input->post(ID5_first_name) $this->form_validation->set_rules('ID5_first_name', 'First Name', 'trim|required|max_length[50]'); 


Then if they are posted they are validated.

Best wishes,

Paul.