Changeset 3043 for trunk/application

Timestamp:

07/10/2008 04:35:52 PM (5 months ago)

Author:

Geert

Message:

Updated the Captcha example to show how you could use the response counters

Files:

• trunk/application/controllers/examples.php (modified) (1 diff)

trunk/application/controllers/examples.php

@@ -175 +175 @@
         public function captcha()
         {
+                // Look at the counters in the Session Profiler
+                new Profiler;
+
+                // Ban bots after 10 invalid responses
+                // Be careful not to ban real people though! Set the threshold high enough.
+                if (Captcha::invalid_response_count() > 9)
+                        exit('Bye! Stupid bot.');
+
                 // Form submitted
-                if (isset($_POST['captcha_response']))
-                {
-                        // Note: Captcha::valid() can be used in conjunction with the Validation library too
-                        echo (Captcha::valid($_POST['captcha_response'])) ? 'Good answer!' : 'Wrong answer!';
-                }
-
-                // Show form
+                if ($_POST)
+                {
+                        // User has not given three valid responses yet
+                        if (Captcha::valid_response_count() < 3)
+                        {
+                                // Valid response has been submitted
+                                if (Captcha::valid_response($this->input->post('captcha_response')))
+                                {
+                                        echo '<p style="color:green">Good answer!</p>';
+                                }
+                                else
+                                {
+                                        echo '<p style="color:red">Wrong answer!</p>';
+                                }
+                        }
+
+                        // Validate other fields here
+                }
+
+                // Open form
                 echo form::open();
-                echo '<p>';
-                echo Captcha::factory()->render(); // <-- shows the Captcha challenge (image/riddle/etc)
-                echo '</p>';
-                echo form::input('captcha_response');
+                echo '<p>Other form fields here...</p>';
+
+                // Don't show Captcha anymore after three or more valid responses
+                if (Captcha::valid_response_count() < 3)
+                {
+                        echo '<p>';
+                        echo Captcha::factory()->render(); // Shows the Captcha challenge (image/riddle/etc)
+                        echo '</p>';
+                        echo form::input('captcha_response');
+                }
+
+                // Close form
                 echo form::submit(array('value' => 'Check'));
                 echo form::close();