Php/docs/class.iteratoraggregate

• PHP Manual
• 预定义接口
• IteratorAggregate（聚合式迭代器）接口

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简介

创建外部迭代器的接口。

接口摘要

IteratorAggregate extends Traversable {

/* 方法 */

abstract public getIterator ( ) : Traversable

}

Example #1 基本用法

<?phpclass myData implements IteratorAggregate {    public $property1 = "Public property one";    public $property2 = "Public property two";    public $property3 = "Public property three";    public function __construct() {        $this->property4 = "last property";    }    public function getIterator() {        return new ArrayIterator($this);    }}$obj = new myData;foreach($obj as $key => $value) {    var_dump($key, $value);    echo "\n";}?>

以上例程的输出类似于：

string(9) "property1"
string(19) "Public property one"

string(9) "property2"
string(19) "Public property two"

string(9) "property3"
string(21) "Public property three"

string(9) "property4"
string(13) "last property"

Table of Contents

• IteratorAggregate::getIterator — 获取一个外部迭代器