Internals

Published on February 12, 2026

Internal WordPress classes not intended for direct plugin use.

Source: wp-includes/class-wp-*.php

Components

Component	Description
class-wp-meta-query.md	Meta query SQL generation
class-wp-tax-query.md	Taxonomy query SQL generation
class-wp-textdomain-registry.md	Translation file registry
class-wp-token-map.md	Token compression map
class-wp-url-pattern-prefixer.md	URL pattern handling
class-wp-matchesmapregex.md	Rewrite rule matching

Note

These classes are used internally by WordPress core. While not private, their APIs may change between versions. Use documented public functions when possible.