# DomNode->replace_child

(No version information available, might be only in CVS)

DomNode->replace_child — Replaces a child

### Description

domelement DomNode->replace_child ( domelement `$newnode` , domelement `$oldnode` )

(PHP 4.2) This function replaces the child `oldnode` with the passed new node. If the new node is already a child it will not be added a second time. If the old node cannot be found the function returns `FALSE`. If the replacement succeeds the old node is returned.

(PHP 4.3) This function replaces the child `oldnode` with the passed `newnode` , even if the new node already is a child of the DomNode. If `newnode` was already inserted in the document it is first unlinked from its existing context. If the old node cannot be found the function returns `FALSE`. If the replacement succeeds the old node is returned. (This behaviour is according to the W3C specs).

See also domnode_append_child()