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)
?>
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