update : 2015.11.03
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Finds children of given node
SimpleXMLElement
PHP Manual

SimpleXMLElement::children

(PHP 5 >= 5.0.1)

SimpleXMLElement::children — Finds children of given node

설명

public SimpleXMLElement SimpleXMLElement::children ([ string $ns [, bool $is_prefix = false ]] )

This method finds the children of an element. The result follows normal iteration rules.

Note: SimpleXML은 대부분의 메쏘드에 추가 반복자 속성 규칙을 가지고 있습니다. 이들은 var_dump()나 객체를 조사하는 어떠한 것으로도 볼 수 없습니다.

인수

ns

An XML namespace.

is_prefix

If is_prefix is TRUE, ns will be regarded as a prefix. If FALSE, ns will be regarded as a namespace URL.

반환값

Returns a SimpleXMLElement element, whether the node has children or not.

변경점

버전 설명
5.2.0 The optional parameter is_prefix was added.

예제

Example #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'];
        }
    }
}
?>

위 예제의 출력:

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

Example #2 Using namespaces

<?php
$xml = '<example xmlns:foo="my.foo.urn">
  <foo:a>Apple</foo:a>
  <foo:b>Banana</foo:b>
  <c>Cherry</c>
</example>';

$sxe = new SimpleXMLElement($xml);

$kids = $sxe->children('foo');
var_dump(count($kids));

$kids = $sxe->children('foo', TRUE);
var_dump(count($kids));

$kids = $sxe->children('my.foo.urn');
var_dump(count($kids));

$kids = $sxe->children('my.foo.urn', TRUE);
var_dump(count($kids));

$kids = $sxe->children();
var_dump(count($kids));
?> 
int(0)
int(2)
int(2)
int(0)
int(1)

주의

SimpleXMLElement::children() returns a node object no matter if the current node has children or not. Use count() on the return value to see if there are any children. As of PHP 5.3.0, SimpleXMLElement::count() may be used instead.

참고

SimpleXMLElement
PHP Manual