19.4. Summary

XML is a language for describing documents. It is not limited to a fixed number of tags, so it is extensible, flexible, and can be used in combination with a variety of technologies.

PHP and PostgreSQL provide interfaces to XML. However, these interfaces are still being developed and have not yet been widely used.

Get PHP and PostgreSQL: Advanced Web Programming now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.