$url
$url : string
CAPTCHA URL
Image captcha class
$image : \Pop\Image\Adapter\Gd
CAPTCHA image
setUrl(string  $url) : \Pop\Image\Captcha
                Set CAPTCHA URL
| string | $url | 
setExpire(integer  $expire) : \Pop\Image\Captcha
                Set CAPTCHA expiration
| integer | $expire | 
setAnswer(string  $answer) : \Pop\Image\Captcha
                Set CAPTCHA answer
| string | $answer | 
setLength(integer  $length) : \Pop\Image\Captcha
                Set CAPTCHA answer length
| integer | $length | 
setUppercase(boolean  $uppercase) : \Pop\Image\Captcha
                Set CAPTCHA answer case
| boolean | $uppercase | 
setReload(string  $reload) : \Pop\Image\Captcha
                Set CAPTCHA reload text
| string | $reload | 
setConfig(array  $config) : \Pop\Image\Captcha
                Set CAPTCHA image config
| array | $config | 
getImage() : \Pop\Image\Adapter\Gd
Get CAPTCHA image
createNewToken() : \Pop\Image\Captcha
Create CAPTCHA token
createImage() : \Pop\Image\Captcha
Create CAPTCHA image