I'm really wondered why there isn't any Factory object for this component. It will be very usefully to have such factory that connected with Zend_Config can make our life and project management much more easier. So i decided to write one.

It's based on Zend_Cache::factory, and except ReCaptcha it works well. With ReCaptcha there is small problem with isValid method - it has different syntax, and without changing isValid part inside your code you can't easy change from eg. Zend_Captcha_Image to Zend_Captcha_ReCaptcha.

Using examples:

       $captcha = Zend_Captcha::factory(
           'Mao_Captcha_FigletCopy',
           array(
               'name'         => 'foo',
               'wordLen'    => 6
           )
       );

       $captcha = Zend_Captcha::factory(
           'Image',
           array(
               'name'         => 'foo',
               'wordLen'    => 6,
               'font'        => APPLICATION_PATH .'library/html2pdf/font/verdana.ttf',
               'imgDir'     => APPLICATION_PATH .'public_html/temp/',
               'imgUrl'    => '/temp/'
           )
       );

I hope that one of ZF developer can take a look at it and include such kind of Zend_Captcha::factory into ZF.