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php-trait-vs-yii-behavior

Property PHP Traits Yii Behaviors
Evaluation Load-time Run-time
Multiplicity One trait use per class Many behavior attachments per instance

Symbols

  • Host/Owner class Host:
class Host {}
  • PHP Trait constructs TraitA, TraitB, ..., TraitX, ...:
trait TraitX { }
  • Yii Behavior classes BhvrA, BhvrB, ..., BhvrX, ...:
class BhvrX extends CBehavior { }

Usage

PHP Traits

class HostTrait
{
  use TraitA;
  use TraitB;
}

// Create first instance
$hostTrait1 = new HostTrait();

// Create second instance
$hostTrait2 = new HostTrait();

Yii behaviors

Generally

class HostBhvr
{
}

// Create first instance
$hostBhvr1 = new HostBhvr();
$hostBhvr1->attachBehavior('bhvr1', new Bhvr1());
$hostBhvr1->attachBehavior('bhvr2', new Bhvr2());

// Create second instance
$hostBhvr2 = new HostBhvr();
$hostBhvr2->attachBehavior('bhvr1', new Bhvr1());
$hostBhvr2->attachBehavior('bhvr2', new Bhvr2());

CModels

class HostModelBhvr extends CModel
{
  public function behaviors()
  {
    return array(
      'bhvr1' => array(
        'class' => 'Bhvr1',
      ),
      'bhvr2' => array(
        'class' => 'Bhvr2',
      ),
    );
  }
}

// Create first instance
$hostModelBhvr1 = new HostModelBhvr();

// Create second instance
$hostModelBhvr2 = new HostModelBhvr();

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