DOMAttr->isId() --
Checks if attribute is a defined ID
Описание
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.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
Примеры
Пример 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');