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SimpleXMLElement::attributes

(PHP 5, PHP 7)

SimpleXMLElement::attributesIdentifies an element's attributes

说明

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

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"