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DOMAttr::isId


(PHP 5)

DOMAttr::isId Checks if attribute is a defined ID

Beschreibung

bool DOMAttr::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.

Rückgabewerte

Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.

Beispiele

PHP Code
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$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)