PHP编程实战14-12

snoopy
brown
beagle cross
teddy
brown
tabby
jade
black
lab cross

THE_XML;

$xml_object = simplexml_load_string($xml);

$xml_object->registerXPathNamespace('cat', 'http://foobar.com/cat');
$xml_object->registerXPathNamespace('dog', 'http://foobar.com/dog');
$names = $xml_object->xpath("dog:name");

foreach ($names as $name) {
    print $name . "
";
}
?>

知识点

• 执行XPath时,需要注册命名空间,然后将命名空间作为查询元素的前缀.