IteratorAggregate（聚合式迭代器）接口

    (PHP 5, PHP 7, PHP 8)

    简介

    创建外部迭代器的接口。

    接口摘要

    interfaceIteratorAggregateextendsTraversable {
    publicgetIterator(): Traversable
    }

    示例 #1 基本用法

    <?php
    class myData implements IteratorAggregate {
    public     $property1 = "Public property one";
    public     $property2 = "Public property two";
    public     $property3 = "Public property three";
    public     $property4 = "";

    public function     __construct() {
    $this->property4 = "last property";
    }

    public function     getIterator(): Traversable {
    return new     ArrayIterator($this);
    }
    }

    $obj = new myData;

    foreach(    $obj as $key => $value) {
    var_dump($key, $value);
    echo     "\n";
    }
    ?>

    以上示例的输出类似于：

     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"

    目录

    To Top