Add a debug mode.

authorizenetwebform.admin.inc

@@ -24,6 +24,13 @@ function authorizenetwebform_admin_settings() {
   $form['authorizenetwebform_mode']['test']['#description'] = t('Posts to https://test.authorize.net/gateway/transact.dll');
   $form['authorizenetwebform_mode']['main']['#description'] = t('Posts to https://secure.authorize.net/gateway/transact.dll');
 
+  $form['authorizenetwebform_debug'] = array(
+    '#type' => 'checkbox',
+    '#title' => t('Debug mode'),
+    '#description' => t('When enabled, the complete response from Auth.net will be stored.<br/>If the <em>Devel</em> module is enabled, the complete response from Auth.net will also be printed to the screen.'),
+    '#default_value' => variable_get('authorizenetwebform_debug', FALSE),
+  );
+
   $form['login'] = array(
     '#type' => 'fieldset',
     '#title' => t('Authorize.net Login'),

authorizenetwebform.install

@@ -45,6 +45,7 @@ function authorizenetwebform_uninstall() {
   variable_del('authorizenetwebform_custom_fields');
   variable_del('authorizenetwebform_url');
   variable_del('authorizenetwebform_client_key');
+  variable_del('authorizenetwebform_debug');
 }
 
 /**