note 58436 added to function.dom-domdocument-importnode

Beware if you're working with classes you've extended from DOMNode, DOMElement, etc. Calling importNode() with an object of your derived class will result in the copy being an instance of the DOM super class. You will *not* get a copy of the derived class or any of its properties or methods. For example: <? class extDOMElement extends DOMElement { function __construct($name, $value='', $namespaceURI=null) { parent::__construct($name, $value, $namespaceURI); } } class extDOMDocument extends DOMDocument { // over-ride DOMDocument->createElement() public function createElement($name, $value) { // intention is to set extDOMElement->ownerDocument property $orphan = new extDOMElement($name, $value); $adopt = $this->importNode($orphan, true); /* at this point $adopt is expected to be an instance of * extDOMElement with ownerDocument property set */ return $adopt; // but $adopt is only a DOMElement } } $doc = new extDOMDocument(); $el = $doc->createElement('tagName'); echo 'Element instanceof '.get_class($el); ?> Will display "Element instanceof DOMElement" rather than the expected "extDOMElement" ---- Manual Page -- http://www.php.net/manual/en/function.dom-domdocument-importnode.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+58436 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+58436&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+58436&report=yes Search -- http://master.php.net/manage/user-notes.php