Get data the way you want

Cookies allow data to be persisted across requests. In PHP, you may access them through the $_COOKIE variable. Yii represents cookie as an object of the yii\web\Cookie class. In this chapter, we describe several…

Cookies are plain text files stored on the client side. You can use them for tracking purpose. There are three steps to identify a returning user − Server sends a…

Yii provides a concept of flash data. Flash data is a session data which − Is set in one request.Will only be available on the next request.Will be automatically deleted…

Sessions make data accessible across various pages. A session creates a file on the server in a temporary directory where all session variables are stored. This data is available to…

The username validation should only be done on the server side because only the server has the needed information. In this case, you can use AJAX-based validation. Step 1 − To…

Sometimes you need to validate values that are not bound to any model. You can use the yii\base\DynamicModel class, which supports defining both attributes and rules on the fly. Step 1 − Add…

You should never trust the data received from users. To validate a model with user inputs, you should call yii\base\Model::validate() method. It returns a Boolean value if the validation succeeds. If there…