CakePHP 2 ReCaptcha Plugin based on CakepPHP 1 tbsmcd's plugin. ***************** Quick start guide ***************** 1. Get reCAPTCHA key. http://www.google.com/recaptcha 2. Setting. Download recaptchalib.php. And put it in recaptcha_plugin/vendors. http://code.google.com/p/recaptcha/downloads/list?q=label:phplib-Latest 3. Config. Insert keys in Recaptcha/Config/key.php . $config = array( 'Recaptcha' => array( 'Public' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', 'Private' => 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx', ), ); 4. Bootstrap if you load your plugins one by one add CakePlugin::load('Recaptcha'); ReCaptcha/Config/bootstrap.php only reads your key.php config file 5. Controller. public $components = array('Recaptcha.Recaptcha'); public $helpers = array('Recaptcha.Recaptcha'); or inside controller action $this->helpers[] = 'Recaptcha.Recaptcha'; $this->Components->load('Recaptcha.Recaptcha')->startup($this); always add in your controller action or in bootstrap Configure::load('Recaptcha.key'); 6. View. Inside <form> tags: echo $this->Recaptcha->show(array $options); $options : any recaptcha supported option (theme, lang, custom_translations, custom_theme_widget, tabindex) example: echo $this->Recaptcha->show(array( 'theme' => 'white', 'lang' => 'fr', )); echo $this->Recaptcha->error();