$containerOptions public property (available since version 2.0.1) The HTML attributes for the container tag. The following special options are recognized: tag: string, defaults to "div", the name of the container tag. See also yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. public array $containerOptions = []

setValues() protected method Stores multiple key-value pairs in cache. The default implementation calls setValue() multiple times store values one by one. If the underlying cache storage supports multi-set, this method should be overridden to exploit that feature. protected array setValues ( $data, $duration )$data array Array where key corresponds to cache key while value is the value stored $duration integer The number of seconds in which the cached values will expire. 0 means never

requiredTemplates() public method Returns a list of code template files that are required. Derived classes usually should override this method if they require the existence of certain template files. public array requiredTemplates ( )return array List of code template files that are required. They should be file paths relative to $templatePath.

exists() public method Checks whether a specified key exists in the cache. This can be faster than getting the value from the cache if the data is big. Note that this method does not check whether the dependency associated with the cached data, if there is any, has changed. So a call to get() may return false while exists returns true. public boolean exists ( $key )$key mixed A key identifying the cached value. This can be a simple string or a complex data structure consisting of factors

handleFailure() public abstract method Handles authentication failure. The implementation should normally throw UnauthorizedHttpException to indicate authentication failure. public abstract void handleFailure ( $response )$response yii\web\Response throws yii\web\UnauthorizedHttpException

addValue() protected method Stores a value identified by a key into cache if the cache does not contain this key. This is the implementation of the method declared in the parent class. protected boolean addValue ( $key, $value, $duration )$key string The key identifying the value to be cached $value mixed The value to be cached. Most often it's a string. If you have disabled $serializer, it could be something else. $duration integer The number of seconds in which the cached value wil

getValue() protected method Retrieves a value from cache with a specified key. This is the implementation of the method declared in the parent class. protected string|false getValue ( $key )$key string A unique key identifying the cached value return string|false The value stored in cache, false if the value is not in the cache or expired.

$imageOptions public property HTML attributes to be applied to the CAPTCHA image tag. See also yii\helpers\Html::renderTagAttributes() for details on how attributes are being rendered. public array $imageOptions = []

rewind() public method Resets the iterator to the initial state. This method is required by the interface Iterator. public void rewind ( )throws yii\base\InvalidCallException if this method is invoked twice

createIndex() public method Builds a SQL statement for creating a new index. See also https://bugs.mysql.com/bug.php?id=48875. public string createIndex ( $name, $table, $columns, $unique = false )$name string The name of the index. The name will be properly quoted by the method. $table string The table that the new index will be created for. The table name will be properly quoted by the method. $columns string|array The column(s) that should be included in the index. If there are