Libraries tagged by form input validation

A fast, extensible & stand-alone PHP input validation class that allows you to validate any data.

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Useful password strength validation utilities for Yii Framework 2.0

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Extra contrib to nette/forms

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WordPress Validation and Sanitization Library

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Simple and convenient file uploads — secure by default

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The Filament CEP Field is a custom input component designed specifically for Brazilian postal codes (CEP - Código de Endereçamento Postal). This component extends Filament's form capabilities by providing a specialized input field that handles CEP formatting, validation, and automatic address lookup.

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A simple, extensible validation library for PHP with support for filtering and validating any input array along with generating client side validation code.

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Password strength validation utilities for Yii2 application templates created by Nenad Z.

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Generate Zod v4 TypeScript schemas from Spatie Laravel Data classes (output) and Laravel FormRequest classes (input). Full Laravel rule coverage, schema references for nested Data classes, lazy-ref dedup for circular relations, locale-aware messages.

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Handle form model binding, old input binding and validation error messages in a clean and easy way.

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PHP library to validate user inputs for APIs or forms

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Abstracts HTTP request input handling, providing an easy interface for data hydration and validation

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Type-safe PHP form validation library with filtering, nested forms, and typed error objects. Zero dependencies.

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Input validation library, that has inbuilt error messages that are translatable, validators that are easy to extend, and that has easy to understand test declaration syntax.

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Modern PHP validation library with fluent API and bulk validation support

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