# symfony/validator

Provides tools to validate values

Repository: https://github.com/symfony/validator
Canonical: https://ross.abutalabs.com/products/symfony-validator
Homepage: https://symfony.com/validator
Language: PHP
License: MIT
License Family: permissive
Topics: php, symfony, component, symfony-component
Last push: 2026-08-26T09:02:42+00:00

## Health v2 (maintenance only)
Score: 95/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 87, longevity 100
- inputs: {"age_days": 5671, "days_push": 7, "days_rel": 11, "gap_med": 0, "n_releases_24m": 96}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2681, forks 106 (observed 2026-08-28T04:07:10.019605+00:00)

## What it is
The Symfony Validator component provides tools to validate values against configurable rules (constraints), following the JSR-303 Bean Validation specification. It is a standalone PHP library usable in any PHP project, not just Symfony applications.

## Use cases
- validate form input in a php application
- validate objects before writing to a database
- add validation rules to php class properties
- validate api request payloads in php
- check string length, email format, and other constraints on values
- validate doctrine entities

## When to choose
- you need robust, battle-tested data validation in a PHP project
- you want a standards-based constraint system with many built-in validators
- you use Symfony, Laravel, or Drupal and need interoperable validation

## When to avoid
- you need validation in a non-PHP language
- you want a schema-based validator for raw JSON documents rather than object properties

## Facets
- artifact type: library
- maturity: stable
- function: middleware, form-handling, developer-tools
- domain: web-development, backend, developer-tools
- platform: php, cross-platform
- tags: validation, constraints, bean-validation, symfony-component, data-validation

## Member repositories
- symfony/validator (main) score 95

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:10.019605+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T02:17:55.791046+00:00, confidence not recorded.
  - readme: https://github.com/symfony/validator (fetched 2026-08-28T04:07:10.019605+00:00, sha 4be5707f1683)
  - homepage: https://symfony.com/validator (fetched 2026-08-29T10:00:12.127638+00:00, sha 7a0f08f8bf9b)
  - site_page: https://symfony.com/doc (fetched 2026-08-29T10:00:12.136285+00:00, sha 44889134f4fb)
  - site_page: https://symfony.com/doc/current/validation.html (fetched 2026-08-29T10:00:12.138056+00:00, sha 6f77c1b85517)
  - site_page: https://symfony.com/releases (fetched 2026-08-29T10:00:12.140565+00:00, sha 2fd410222cfe)
  - site_page: https://symfony.com/blog/category/releases (fetched 2026-08-29T10:00:12.142378+00:00, sha 83b70dd163fb)
- Data as of 2026-08-30T08:39:29.467469+00:00.