DomNode->node_value Returns value of a node stringDomNode->node_value Returns value of the node. The value has different meanings for the different types of nodes as illustrated in the following table. Type Meaning DomAttribute value of attribute DomAttribute DomCDataSection content DomComment content of comment DomDocument null DomDocumentType null DomElement null DomEntity null DomEntityReference null DomNotation null DomProcessingInstruction entire content without target DomText content of text