Case Folding
Character Encoding
XML Parser
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# Error Codes

The following constants are defined for XML error codes (as returned by xml_parse()):

- XML_ERROR_NONE
- XML_ERROR_NO_MEMORY
- XML_ERROR_SYNTAX
- XML_ERROR_NO_ELEMENTS
- XML_ERROR_INVALID_TOKEN
- XML_ERROR_UNCLOSED_TOKEN
- XML_ERROR_PARTIAL_CHAR
- XML_ERROR_TAG_MISMATCH
- XML_ERROR_DUPLICATE_ATTRIBUTE
- XML_ERROR_JUNK_AFTER_DOC_ELEMENT
- XML_ERROR_PARAM_ENTITY_REF
- XML_ERROR_UNDEFINED_ENTITY
- XML_ERROR_RECURSIVE_ENTITY_REF
- XML_ERROR_ASYNC_ENTITY
- XML_ERROR_BAD_CHAR_REF
- XML_ERROR_BINARY_ENTITY_REF
- XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF
- XML_ERROR_MISPLACED_XML_PI
- XML_ERROR_UNKNOWN_ENCODING
- XML_ERROR_INCORRECT_ENCODING
- XML_ERROR_UNCLOSED_CDATA_SECTION
- XML_ERROR_EXTERNAL_ENTITY_HANDLING

Case Folding
Character Encoding
XML Parser
PHP Manual