Made recaptcha_check_answer() simpler for use.

README.md

@@ -43,6 +43,10 @@ Check the REcaptcha with the following function when submitted.
 
 Run this code: 
 <pre><code>
+$this->recaptcha->recaptcha_check_answer();
+</code></pre>
+Or this, if you have changed fieldnames:
+<pre><code>
 $this->recaptcha->recaptcha_check_answer(
                     $_SERVER['REMOTE_ADDR'],
                     $this->input->post('recaptcha_challenge_field'),
@@ -99,7 +103,7 @@ class Login extends MY_Controller {
 		if ($this->input->post('username') !== FALSE && $this->input->post('password') !== FALSE) 
 		{
 		          //Call to recaptcha to get the data validation set within the class. 
-                    $this->recaptcha->recaptcha_check_answer($_SERVER['REMOTE_ADDR'],$this->input->post('recaptcha_challenge_field'),$this->input->post('recaptcha_response_field'));
+                    $this->recaptcha->recaptcha_check_answer();
 
                     //Store the username and password for easier access
                     $username = $this->input->post('username');

libraries/Recaptcha.php

@@ -35,6 +35,12 @@ class Recaptcha {
     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
     * THE SOFTWARE.
+    *
+    *
+    * UPDATE HISTORY:
+    * 28.08.2013 -  Made recaptcha_check_answer() function bit simpler on default
+    *               fields as html is generated by recaptcha_get_html() function.
+    * Updated by -  Puneet Kalra (https://github.com/puneetkay)
     */
 
     /**
@@ -176,12 +182,16 @@ function recaptcha_get_html ($error = null, $use_ssl = false)
      * @param array $extra_params an array of extra variables to post to the server
      * @return ReCaptchaResponse
      */
-    function recaptcha_check_answer ($remoteip, $challenge, $response, $extra_params = array())
+    function recaptcha_check_answer ($remoteip = null, $challenge = null, $response = null, $extra_params = array())
     {
         if ($this->privkey == null || $this->privkey == '') {
             die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
         }
 
+        $remoteip = ($remoteip == null) ? $_SERVER['REMOTE_ADDR'] : $remoteip;
+        $challenge = ($challenge == null) ? $this->_ci->input->post('recaptcha_challenge_field') : $challenge;
+        $response = ($response == null) ? $this->_ci->input->post('recaptcha_response_field') : $response;
+
         if ($remoteip == null || $remoteip == '') {
             die ("For security reasons, you must pass the remote ip to reCAPTCHA");
         }