$di = new DI(); $di->set('collection', function() { return new IzicaCollection(); });

 use Phalcon\Mvc\Controller; class IndexController extends Controller { public function indexAction() { $arCars = Cars::find(); $jsonResponse = $this->collection->create($arCars)->groupBy('year')->toJson(); } }

 $arr = [ ['value' => 2, 'value2' => 4, 'value3' => 'foo'], ['value' => 6, 'value2' => 1, 'value3' => 'bar'] ]; $arResult = $this->collection->create($arr)->average(); //Array //( // [value] => 4 // [value2] => 2.5 //) $arResult = $this->collection->create($arr)->average('value'); //4 $collection = $this->collection->create($arr)->average(['value']); //Array //( // [value] => 4 //) $collection = $this->collection->create([1, 5, 6 ,7])->average(); //4.75

 $collection = $this->collection->create([1, 2, 3, 4, 5])->chunk(2); //[ // [1, 2],  // [3, 4] // [5] //]

 $arResult = $this->collection->create($arr)->groupBy('value'); $arResult = $this->collection->create($arr)->groupBy(function($arItem){ return (int)$arItem['value'] * 2; });

 $arResult = $this->collection->create($arr)->keyBy('id'); $arResult = $this->collection->create($arr)->keyBy(function($arItem){ return strtoupper($arItem['code']); });

 //has(key, value); $arr = ['value' => 'bar', 'value2' => 'foo']; $result = $this->collection->create($arr)->has('value'); // true $result = $this->collection->create($arr)->has('value', 'bar'); // true $result = $this->collection->create($arr)->has('value', 'xyz'); // false

 $arResult = $this->collection->create(Cars::find())->toArray()->groupBy('value'); // return result in Array Object after groupBy $arResult = $this->collection->create(Cars::find())->toArray(true) // return result in Array string instant, ~Cars::find()->toArray();

 $arResult = $this->collection->create($arr)->toJson()->groupBy('value'); // return result in JSON string after groupBy $arResult = $this->collection->create($arr)->toJson(true) // return result in JSON string instant