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PHP: DOMAttr->isId() - Manual
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DOMAttr->__construct()DOMAttr->isId()
(No version information available, might be only in CVS)
DOMAttr->isId() — Checks if attribute is a defined ID
说明
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
Example#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)
?> BlaBla.cn
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