PHP Manual
后退		前进

DOMNodelist->item

(no version information, might be only in CVS)

DOMNodelist->item -- Retrieves a node specified by index.

Description

object DOMNodelist->item ( int index)

Retrieves a node specified by index within the DOMNodelist object.

后退	起点	前进
DOMNode->replaceChild	上一级	DOMText->isWhitespaceInElementContent