PHP XML Parser Functions
PHP XML Parser Introduction
The XML functions lets you parse, but not validate, XML documents.
XML is a data format for standardized structured document exchange. More
information on XML can be found in our
XML Tutorial.
This extension uses the Expat XML parser.
Expat is an event-based parser, it views an XML document as a series of
events. When an event occurs, it calls a specified function to handle it.
Expat is a non-validating parser, and ignores any DTDs linked to a document.
However, if the document is not well formed it will end with an error message.
Because it is an event-based, non validating parser, Expat is fast and well
suited for web applications.
The XML parser functions lets you create XML parsers and define handlers for XML
events.
Installation
The XML functions are part of the PHP core. There is no installation
needed to use these functions.
PHP XML Parser Functions
PHP: indicates the earliest version of PHP that supports the
function.
PHP XML Parser Constants
| Constant |
| XML_ERROR_NONE (integer) |
| XML_ERROR_NO_MEMORY (integer) |
| XML_ERROR_SYNTAX (integer) |
| XML_ERROR_NO_ELEMENTS (integer) |
| XML_ERROR_INVALID_TOKEN (integer) |
| XML_ERROR_UNCLOSED_TOKEN (integer) |
| XML_ERROR_PARTIAL_CHAR (integer) |
| XML_ERROR_TAG_MISMATCH (integer) |
| XML_ERROR_DUPLICATE_ATTRIBUTE (integer) |
| XML_ERROR_JUNK_AFTER_DOC_ELEMENT (integer) |
| XML_ERROR_PARAM_ENTITY_REF (integer) |
| XML_ERROR_UNDEFINED_ENTITY (integer) |
| XML_ERROR_RECURSIVE_ENTITY_REF (integer) |
| XML_ERROR_ASYNC_ENTITY (integer) |
| XML_ERROR_BAD_CHAR_REF (integer) |
| XML_ERROR_BINARY_ENTITY_REF (integer) |
| XML_ERROR_ATTRIBUTE_EXTERNAL_ENTITY_REF (integer) |
| XML_ERROR_MISPLACED_XML_PI (integer) |
| XML_ERROR_UNKNOWN_ENCODING (integer) |
| XML_ERROR_INCORRECT_ENCODING (integer) |
| XML_ERROR_UNCLOSED_CDATA_SECTION (integer) |
| XML_ERROR_EXTERNAL_ENTITY_HANDLING (integer) |
| XML_OPTION_CASE_FOLDING (integer) |
| XML_OPTION_TARGET_ENCODING (integer) |
| XML_OPTION_SKIP_TAGSTART (integer) |
| XML_OPTION_SKIP_WHITE (integer) |
| 