Yii: function, functions, method, methods

// Check request is Ajax
Yii::app()->request->isAjaxRequest

// Get $_POST
Yii::app()->request->getParam === $_POST
Yii::app()->request->getParam('Archives'); // $_POST['Archives']

// Redirect link
$this->redirect(Yii::app()->getBaseUrl() . "/archives");

// Get WebRoot folder link
Yii::getPathOfAlias('webroot'); // C:/wamp/www/mentor
Yii::app()->homeUrl 
Yii::app()->getBaseUrl()

// Get Time now
$time = new CDbExpression('NOW()');

// Convert Date form database
<?php echo date('H:i d/m/Y',STRTOTIME($session['lastUpdate']) ) ?>

// Find by attributes 
$model = Users::model()->findByAttributes(array("username" =>$username));

// Count by attributes 
$checkUser = Users::model()->countByAttributes(array('username'=> $username));

// Delete all by atributes
ArchiveSession::model()->deleteAllByAttributes(array(), 'idArchive = :id', array(":id" => $docId));

// Find by PK
$docPath = Archives::model()->findByPk((int) $docId);