# La interfaz IteratorAggregate

(PHP 5, PHP 7, PHP 8)

## Introducción

Para crear una interfaz externa Iterator.

## Sinopsis de la Interfaz

interface IteratorAggregate extends Traversable {
/* Métodos */
public getIterator(): Traversable
}

Ejemplo #1 Uso básico

`<?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";
}
?>`

El resultado del ejemplo sería algo similar a:

    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"

## Tabla de contenidos

- IteratorAggregate::getIterator — Recuperar un Iterator externo