This function returns a new instance of class DomElement. The tag name of the element is the value of the passed parameter. This node will not show up in the document unless it is inserted with e.g. DomNode_append_child().
The return value is false if an error occured.
See also DomDocument_create_element_ns(), DomNode_append_child(), DomDocument_create_text(), DomDocument_create_comment(), DomDocument_create_attribute(), DomDocument_create_processing_instruction(), DomDocument_create_entity_reference(), DomNode_insert_before().