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# SimpleXMLElement->children()

(no version information, might be only in CVS)

SimpleXMLElement->children() -- Finds children of given node

## 说明

class SimpleXMLElement {
SimpleXMLElement children ( [string ns [, bool is_prefix]] )
}

This method finds the children of the element of which it is a member. The result follows normal iteration rules.

> 注意: SimpleXML 创建了一条给大部分方法增加交互式属性的规则。这些属性不能够使用 var_dump() 或其它检查对象的方法来查看。

## 参数

`ns`

`is_prefix`

  Default to `FALSE`

## 返回值

## 更新日志

版本 | 说明
--- | ---
5.2.0 | The optional parameter `is_prefix` was added.

## 范例

例 1. Traversing a `children()` pseudo-array

`<?php
$xml = new SimpleXMLElement(
'<person>
<child role="son">
<child role="daughter"/>
</child>
<child role="daughter">
<child role="son">
<child role="son"/>
</child>
</child>
</person>');
foreach ($xml->children() as $second_gen) {
echo ' The person begot a ' . $second_gen['role'];
foreach ($second_gen->children() as $third_gen) {
echo ' who begot a ' . $third_gen['role'] . ';';
foreach ($third_gen->children() as $fourth_gen) {
echo ' and that ' . $third_gen['role'] .
' begot a ' . $fourth_gen['role'];
}
}
}
?>`

上例将输出：

    The person begot a son who begot a daughter; The person
    begot a daughter who begot a son; and that son begot a son

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