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)

?>


	PHP5中文手册 DOMAttr->__construct() DOMCharacterData->appendData() DOM PHP Manual 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) ?>` DOMAttr->__construct() DOMCharacterData->appendData() DOM PHP Manual