SimpleXMLElement::attributes

(PHP 5 >= 5.0.1)

SimpleXMLElement::attributes — Identifies an element's attributes

说明

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

This function provides the attributes and values defined within an xml tag.

Note: SimpleXML 建起了一个给大多数方法添加迭代属性的规则。不能通过使用 var_dump() 或任何可检查对象的其它东西来查看。

参数

ns: An optional namespace for the retrieved attributes
is_prefix: Default to FALSE

返回值

Returns a SimpleXMLElement object that can be iterated over to loop through the attributes on the tag.

Returns NULL if called on a SimpleXMLElement object that already represents an attribute and not a tag.

范例

Example #1 Interpret an XML string


<?php
$string = <<<XML
<a>
 <foo name="one" game="lonely">1</foo>
</a>
XML;

$xml = simplexml_load_string($string);
foreach($xml->foo[0]->attributes() as $a => $b) {
    echo $a,'="',$b,"\"\n";
}
?>

以上例程会输出：

name="one"
game="lonely"