&reftitle.constants; &extension.constants;

# XML constants

Constant | Value | Description
`XML_ELEMENT_NODE` (`int`) | 1 | Node is a `DOMElement`
`XML_ATTRIBUTE_NODE` (`int`) | 2 | Node is a `DOMAttr`
`XML_TEXT_NODE` (`int`) | 3 | Node is a `DOMText`
`XML_CDATA_SECTION_NODE` (`int`) | 4 | Node is a `DOMCharacterData`
`XML_ENTITY_REF_NODE` (`int`) | 5 | Node is a `DOMEntityReference`
`XML_ENTITY_NODE` (`int`) | 6 | Node is a `DOMEntity`
`XML_PI_NODE` (`int`) | 7 | Node is a `DOMProcessingInstruction`
`XML_COMMENT_NODE` (`int`) | 8 | Node is a `DOMComment`
`XML_DOCUMENT_NODE` (`int`) | 9 | Node is a `DOMDocument`
`XML_DOCUMENT_TYPE_NODE` (`int`) | 10 | Node is a `DOMDocumentType`
`XML_DOCUMENT_FRAG_NODE` (`int`) | 11 | Node is a `DOMDocumentFragment`
`XML_NOTATION_NODE` (`int`) | 12 | Node is a `DOMNotation`
`XML_HTML_DOCUMENT_NODE` (`int`) | 13 |
`XML_DTD_NODE` (`int`) | 14 |
`XML_ELEMENT_DECL_NODE` (`int`) | 15 |
`XML_ATTRIBUTE_DECL_NODE` (`int`) | 16 |
`XML_ENTITY_DECL_NODE` (`int`) | 17 |
`XML_NAMESPACE_DECL_NODE` (`int`) | 18 |
`XML_ATTRIBUTE_CDATA` (`int`) | 1 |
`XML_ATTRIBUTE_ID` (`int`) | 2 |
`XML_ATTRIBUTE_IDREF` (`int`) | 3 |
`XML_ATTRIBUTE_IDREFS` (`int`) | 4 |
`XML_ATTRIBUTE_ENTITY` (`int`) | 5 |
`XML_ATTRIBUTE_NMTOKEN` (`int`) | 7 |
`XML_ATTRIBUTE_NMTOKENS` (`int`) | 8 |
`XML_ATTRIBUTE_ENUMERATION` (`int`) | 9 |
`XML_ATTRIBUTE_NOTATION` (`int`) | 10 |

## DOMException constants

Constant | Value | Description
`DOM_PHP_ERR` (`int`) | 0 | Error code not part of the DOM specification. Meant for PHP errors.
`DOM_INDEX_SIZE_ERR` (`int`) | 1 | If index or size is negative, or greater than the allowed value.
`DOMSTRING_SIZE_ERR` (`int`) | 2 | If the specified range of text does not fit into a `DOMString`.
`DOM_HIERARCHY_REQUEST_ERR` (`int`) | 3 | If any node is inserted somewhere it doesn't belong
`DOM_WRONG_DOCUMENT_ERR` (`int`) | 4 | If a node is used in a different document than the one that created it.
`DOM_INVALID_CHARACTER_ERR` (`int`) | 5 | If an invalid or illegal character is specified, such as in a name.
`DOM_NO_DATA_ALLOWED_ERR` (`int`) | 6 | If data is specified for a node which does not support data.
`DOM_NO_MODIFICATION_ALLOWED_ERR` (`int`) | 7 | If an attempt is made to modify an object where modifications are not allowed.
`DOM_NOT_FOUND_ERR` (`int`) | 8 | If an attempt is made to reference a node in a context where it does not exist.
`DOM_NOT_SUPPORTED_ERR` (`int`) | 9 | If the implementation does not support the requested type of object or operation.
`DOM_INUSE_ATTRIBUTE_ERR` (`int`) | 10 | If an attempt is made to add an attribute that is already in use elsewhere.
`DOM_INVALID_STATE_ERR` (`int`) | 11 | If an attempt is made to use an object that is not, or is no longer, usable.
`DOM_SYNTAX_ERR` (`int`) | 12 | If an invalid or illegal string is specified.
`DOM_INVALID_MODIFICATION_ERR` (`int`) | 13 | If an attempt is made to modify the type of the underlying object.
`DOM_NAMESPACE_ERR` (`int`) | 14 | If an attempt is made to create or change an object in a way which is incorrect with regard to namespaces.
`DOM_INVALID_ACCESS_ERR` (`int`) | 15 | If a parameter or an operation is not supported by the underlying object.
`DOM_VALIDATION_ERR` (`int`) | 16 | If a call to a method such as insertBefore or removeChild would make the Node invalid with respect to "partial validity", this exception would be raised and the operation would not be done.