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The constants below are defined by this extension, and will only be available when the extension has either been compiled into PHP or dynamically loaded at runtime.

XML constants
Constant Value Description
XML_ELEMENT_NODE (integer) 1 Node is a DOMElement
XML_ATTRIBUTE_NODE (integer) 2 Node is a DOMAttr
XML_TEXT_NODE (integer) 3 Node is a DOMText
XML_CDATA_SECTION_NODE (integer) 4 Node is a DOMCharacterData
XML_ENTITY_REF_NODE (integer) 5 Node is a DOMEntityReference
XML_ENTITY_NODE (integer) 6 Node is a DOMEntity
XML_PI_NODE (integer) 7 Node is a DOMProcessingInstruction
XML_COMMENT_NODE (integer) 8 Node is a DOMComment
XML_DOCUMENT_NODE (integer) 9 Node is a DOMDocument
XML_DOCUMENT_TYPE_NODE (integer) 10 Node is a DOMDocumentType
XML_DOCUMENT_FRAG_NODE (integer) 11 Node is a DOMDocumentFragment
XML_NOTATION_NODE (integer) 12 Node is a DOMNotation
XML_DTD_NODE (integer) 14  
XML_ELEMENT_DECL_NODE (integer) 15  
XML_ENTITY_DECL_NODE (integer) 17  
XML_ATTRIBUTE_ID (integer) 2  
DOMException constants
Constant Value Description
DOM_PHP_ERR (integer) 0 Error code not part of the DOM specification. Meant for PHP errors.
DOM_INDEX_SIZE_ERR (integer) 1 If index or size is negative, or greater than the allowed value.
DOMSTRING_SIZE_ERR (integer) 2 If the specified range of text does not fit into a DOMString.
DOM_HIERARCHY_REQUEST_ERR (integer) 3 If any node is inserted somewhere it doesn't belong
DOM_WRONG_DOCUMENT_ERR (integer) 4 If a node is used in a different document than the one that created it.
DOM_INVALID_CHARACTER_ERR (integer) 5 If an invalid or illegal character is specified, such as in a name.
DOM_NO_DATA_ALLOWED_ERR (integer) 6 If data is specified for a node which does not support data.
DOM_NO_MODIFICATION_ALLOWED_ERR (integer) 7 If an attempt is made to modify an object where modifications are not allowed.
DOM_NOT_FOUND_ERR (integer) 8 If an attempt is made to reference a node in a context where it does not exist.
DOM_NOT_SUPPORTED_ERR (integer) 9 If the implementation does not support the requested type of object or operation.
DOM_INUSE_ATTRIBUTE_ERR (integer) 10 If an attempt is made to add an attribute that is already in use elsewhere.
DOM_INVALID_STATE_ERR (integer) 11 If an attempt is made to use an object that is not, or is no longer, usable.
DOM_SYNTAX_ERR (integer) 12 If an invalid or illegal string is specified.
DOM_INVALID_MODIFICATION_ERR (integer) 13 If an attempt is made to modify the type of the underlying object.
DOM_NAMESPACE_ERR (integer) 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 (integer) 15 If a parameter or an operation is not supported by the underlying object.
DOM_VALIDATION_ERR (integer) 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.
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