Yii: What is signature of behaviors?

Question

what is signature of behaviors in yii? should this be a function or a class method? Can any provide sample code?

Answer 1

There is no signature for behaviors, as behaviors are intented to add some function to class. Only requirement is to extend from CBehavior. Like in wiki or docs:

class SomeClass extends CBehavior
{
    public function add($x, $y) { return $x + $y; }
}

class Test extends CComponent
{
    public $blah;
}

$test = new Test(); 
// Attach behavior
$test->attachbehavior('blah', new SomeClass);

// Now you can call `add` on class Test
$test->add(2, 5);

However since PHP 5.4 you can use Traits which are native php implementation and have a lot more features, example above with traits:

// NOTE: No need to extend from any base class
trait SomeClass
{
    public function add($x, $y) { return $x + $y; }
}

class Test extends CComponent
{
    // Will additionally use methods and properties from SomeClass
    use SomeClass;
    public $blah;
}

$test = new Test(); 
// You can call `add` on class Test because of `use SomeClass;`
$test->add(2, 5);

There are a lot more features with traits