php中的设计模式之迭代器模式

myiterator = $iterator;		$this->position = 0 ;	}		//  获取当前	 function current() {        return $this->myiterator[$this->position];    }		// 下个index	function next(){		 		++$this->position ;	}	//获得key(下标)	function key(){		return $this->position; 	}		function value(){		return $this->myiterator[$this->position];	}		// 重新遍历	 function rewind() {        $this->position = 0;    }		function valid(){		return isset($this->myiterator[$this->position]);	}		}// 应用 /*$aData = array('a','b','c');$myiterator = new myiterator($aData); while($myiterator->valid()){    $myiterator->next();}*/// (2)搭建自己的容器 interface container {	public function  getIterator();}class myContainer implements container{		private $iterator ;	public function __construct($data){		$this->iterator = new myiterator($data) ;	}		public function getIterator(){		return   $this->iterator;	}	}// 应用实例$data = array('a','b','c');$myContainer = new myContainer($data) ;// 获得迭代器$myiterator =  $myContainer->getIterator();while($myiterator->valid()){    var_dump($myiterator->current());    $myiterator->next();}