Yii框架模拟组件调用注入示例

'components'  =  array(
  '组件调用名'  =   '组件调用命名空间',
  '组件调用名'  =  array(
      'class' =  '组件调用命名空间'
  );
  '组件调用名'  =  function(){
    return new '组件调用命名空间';
  }
)

<?php
namespace app\components\Services;
/**
 * 自定义服务层调用组件
 * 支持 的实例模式只有yii模式的string 和 array 模式
 * 例子
 * services =  array(
 *   'customService' =  array(
*        'class' =  'app\components\Custom\Custom',
*        'name' =  '我是勇哥'
*      ),
 * )
 */
class Services
{
  private $dataObj = array();
  private $classes = array();
  public function __set($name,$value)
  {
    $this- classes[$name] = $value;
  }
  public function __get($name)
  {
    if(!isset($this- dataObj[$name]) || $this- dataObj[$name] == null)
    {
      $classInfo = $this- classes[$name];
      $this- dataObj[$name] = is_array($classInfo) ? (new $classInfo['class']) : (new $classInfo);
      if(is_array($classInfo))
        foreach($classInfo as $a= $b)
          if($a != 'class')
            $this- dataObj[$name]- $a = $b;
    }
    return $this- dataObj[$name];
  }
}

'components'= array(
  'services' =  array(
    'class'  =   'app\components\Services\Services',
    //自定义服务 custom1
    'custom1Service' =  array(
      'class' =  'app\services\Custom1\Custom1',
      //需要注入的属性值
      'name'  =  '我是勇哥',
      'age'  =  22
    ),
    //自定义服务 custom2
    'custom2Service' =  array(
      'class' =  'app\services\Custom2\Custom2',
      //需要注入的属性值
      'name'  =  '我是勇哥',
      'age'  =  22
    ),
  )
)

<?php
namespace app\controllers\home;
use Yii;
use yii\web\Controller;
class IndexController extends Controller
{
  public function actionIndex()
  {
    echo Yii::$app- services- custom1Service- name;
  }
}