Problem with edit data in db with form

PHP Code:

$data = array(
    'site_name'   = $this->input->post('site_name', TRUE),
    'email_admin' = $this->input->post('email_admin', TRUE),
    'keywords'    = $this->input->post('keywords', TRUE),
    'description' = $this->input->post('description', TRUE),
    'publickey'   = $this->input->post('publickey', TRUE),
    'privatekey'  = $this->input->post('privatekey', TRUE),
); 


What did you Try? What did you Get? What did you Expect?

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