The use of text/xml has been criticized RFC 7303 also recommends that XML-based languages be given media types ending in xml; for example image/svg xml for SVG.Further guidelines for the use of XML in a networked context appear in RFC 3470, also known as IETF BCP 70, a document covering many aspects of designing and deploying an XML-based language.Hopefully it'll save someone else the trouble of reinventing this wheel.Note that these DOM functions expect (and presumably return) all their data in UTF-8 character encoding, regardless of what PHP's current encoding is.The material in this section is based on the XML Specification.
As of release 2.4.16, libxml2 passed all 1800 tests from the OASIS XML Tests Suite.
Event-based parsers do not need to load the entire file into memory to begin parsing.
In computing, Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.
While this SAX event based parser is better for memory management than the tree based parsers of Simple XML and DOM, the pull-based parser XMLReader is much easier to use than the xml_parser_* functions, and still doesn't require loading the file into memory.
An event-based parser such XML Parser is preferable for large files, because tree-based parsers must fully load the file into memory in order to parse the XML.