| The Document Object Modeling (DOM) classes / The DomDocument class | |
Cautions when working with the xml.DomDocument class.
Whitespaces, line feeds and carriage returns between elements are represented as text nodes in memory. An XML document written in a single line and a human readable (pretty printed format) do not have the same representation in the DomDocument. Take this under account when navigating in the document.
If a DomNode is not attached to a DomDocument and not referenced by any variable it can be destroyed. If one child of this node is still referenced, this child is not destroyed but its parent and the others node of the subtree are destroyed. To check if a node is attached to a DomDocument use isAttached method.
DomDocument remains in memory if any of its node is still referenced in a variable.