array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'class.iteratoraggregate.php', 1 => 'IteratorAggregate', ), 'up' => array ( 0 => 'reserved.interfaces.php', 1 => '预定义接口和类', ), 'prev' => array ( 0 => 'iterator.valid.php', 1 => 'Iterator::valid', ), 'next' => array ( 0 => 'iteratoraggregate.getiterator.php', 1 => 'IteratorAggregate::getIterator', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'zh', 'path' => 'language/predefined/iteratoraggregate.xml', ), 'extra_header_links' => array ( 'rel' => 'alternate', 'href' => '/manual/en/feeds/class.iteratoraggregate.atom', 'type' => 'application/atom+xml', ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); ?>
(PHP 5, PHP 7, PHP 8)
创建外部迭代器的接口。
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"