Codeigniter ci-merchant library - authorize.net payment gateway integration issue [closed]

Question

I tried to integrate codeigniter authorize.net payment gateway by using the docs http://ci-merchant.org , I can successfully integrate the paypal but unfortunately i couldn't do authorize.net. The below code i have tried,but not working, how to do it ?

$this->load->library('merchant');
$this->merchant->load('authorize_net_sim');
$settings = array(
'api_login_id' => 'xxxx',
'transaction_key' => 'xxxx',
'test_mode' => true);

$this->merchant->initialize($settings);

$params = array( 
        'amount' => 10, 
        'currency' => 'USD', 
        'card_no' => '4111111111111111', 
        'exp_month' => '12', 
        'exp_year' => '14', 
        'csc' => 123, 
        'first_name' => 'Ashok', 
        'last_name' => 'KS',
        'return_url' => 'http://www.ioss.in/success',
        'cancel_url' => 'http://www.ioss.in/cancel'    
        );
$response = $this->merchant->purchase($params);   

print_r($response) returns:

Merchant_response Object (
    [_status:protected] => failed
    [_message:protected] =>
    [_reference:protected] =>
    [_data:protected] =>
    [_redirect_url:protected] =>
    [_redirect_method:protected] => GET
    [_redirect_message:protected] =>
    [_redirect_data:protected] =>
)

UPDATE 1 after change the code, its working fine...

$params = array(
'amount' => 10.00,
'currency' => 'USD',
'return_url' => 'http://www.ioss.in',
'cancel_url' => 'http://www.google.in');

Answer 1

Per the comments, if the $response is failing with no error message it's generally because you are trying to submit credit card details unencrypted (not using HTTPS), which isn't supported by CI Merchant (for obvious security reasons).

In this case, the credit card details wern't necessary anyway because the Auth.net SIM gateway is an off-site gateway (card details are not entered on your site). Changing the $request to this fixed the problem:

$params = array(
    'amount' => 10.00,
    'currency' => 'USD',
    'return_url' => 'http://www.ioss.in',
    'cancel_url' => 'http://www.google.in',
);

In addition, to use the Authorize.net developer endpoint, developer_mode must be set to true in the gateway settings. This is different from test_mode (Auth.net specific feature):

$settings = array(
    'api_login_id' => 'xxxx',
    'transaction_key' => 'xxxx',
    'developer_mode' => true,
);
$this->merchant->initialize($settings);