echo CHtml::link('Click here!', array('controller/action'));
echo CHtml::textField('username');
echo CHtml::submitButton('Submit', array('class'=>'btn btn-primary'));This code will generate an HTML submit button with the label "Submit" and the class "btn btn-primary". In summary, the CHtml tag is a PHP package library that is commonly used in web development to generate HTML markup quickly and efficiently. It provides methods to create various HTML tags and attributes, such as hyperlinks, input fields, and buttons.