Yii – Properties
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Class member variables in PHP are also called properties. They represent the state of class instance. Yii introduces a class called yiibaseObject. It supports defining properties via getter or setter class methods.
A getter method starts with the word get. A setter method starts with set. You can use properties defined by getters and setters like class member variables.
When a property is being read, the getter method will be called. When a property is being assigned, the setter method will be called. A property defined by a getter is read only if a setter is not defined.
Step 1 − Create a file called Taxi.php inside the components folder.
<?php namespace appcomponents; use yiibaseObject; class Taxi extends Object { private $_phone; public function getPhone() { return $this->_phone; } public function setPhone($value) { $this->_phone = trim($value); } } ?>
In the code above, we define the Taxi class derived from the Object class. We set a getter – getPhone() and a setter – setPhone().
Step 2 − Now, add an actionProperties method to the SiteController.
public function actionProperties() { $object = new Taxi(); // equivalent to $phone = $object->getPhone(); $phone = $object->phone; var_dump($phone); // equivalent to $object->setLabel(''abc''); $object->phone = ''79005448877''; var_dump($object); }
In the above function we created a Taxi object, tried to access the phone property via the getter, and set the phone property via the setter.
Step 3 − In your web browser, type http://localhost:8080/index.php?r=site/properties, in the address bar, you should see the following output.
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