DOMAttr->isId()
(no version information, might be only in CVS)
DOMAttr->isId() --
Checks if attribute is a defined ID
说明
class
DOMAttr
{
bool
isId
( void )
}
This function checks if the attribute is a defined ID.
According to the DOM standard this requires a DTD which defines the
attribute ID to be of type ID. You need to validate your document with
DOMDocument->validate()
or
DOMDocument::validateOnParse
before using this function.
返回值
如果成功则返回
TRUE
，失败则返回
FALSE
。
范例
例子 1. DOMAttr->isId() Example
<?php
$doc
= new
DomDocument
;
// We need to validate our document before refering to the id
$doc
->
validateOnParse
=
true
;
$doc
->
Load
(
'book.xml'
);
// We retrieve the attribute named id of the chapter element
$attr
=
$doc
->
getElementsByTagName
(
'chapter'
)->
item
(
0
)->
getAttributeNode
(
'id'
);
var_dump
(
$attr
->
isId
());
// bool(true)
?>
|
|