PHP. Руководство по PHP. 2005
DOMAttr->isId()
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DOMAttr->isId()
(no version information, might be only in CVS)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.