checkRequirements() public static method Checks if there

getVerifyCode() public method Gets the verification code

$imageOptions public property HTML attributes to be applied to

$padding public property Padding around the text. Defaults to

getSessionKey() protected method Returns the session variable

validateValue() protected method Validates a value.

renderImageByImagick() protected method Renders the CAPTCHA

$imageLibrary public property (available since version 2.0.7) The

run() public method Runs the action.

init() public method Initializes the action.