Libraries for filtering and validating data.
- Cake Validation - Another validation library (CP).
- DMS Filter - An annotation filtering library.
- Filterus - A simple PHP filtering library.
- ISO-codes - A library for validating inputs according standards from ISO, International Finance, Public Administrations, GS1, Book Industry, Phone numbers & Zipcodes for many countries
- MetaYaml - A schema validation library that supports YAML, JSON and XML.
- Respect Validation - A simple validation library.
- Upload - A library for handling file uploads and validation.
- Valitron - Another validation library.
- Volan - Another simplified validation library.