Respect / Validation

The most awesome validation engine ever created for PHP

aporat / store-receipt-validator

A modern PHP library for validating in-app purchases from the Apple App Store (including legacy iTunes), Google Play and Amazon Appstore

Propaganistas / Laravel-Disposable-Email

Disposable email address validator for Laravel

symfony / validator

Provides tools to validate values

symfony / property-info

Extracts information about PHP class' properties using metadata of popular sources