Libraries tagged by validation engine

A Symfony-compatible workflow engine for Laravel. State machines, Petri nets, guards, events, validation, weighted arcs, middleware, and YAML/JSON/PHP import/export.

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File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.

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Framework-agnostic form-builder engine for Contenir CMS — runtime-editable form definitions, builder-form construction, server-side submission validation.

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100% ECMA-262 compliant regular expression engine for PHP, designed for JSON Schema validation and full JavaScript regex compatibility

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Extensible Laravel filtering engine with Amazon-style faceted search. Supports field types (string, numeric, boolean, date), operator-level validation, clean structured errors, and automatic query builder mapping. Perfect for APIs, dashboards, and complex multi-field filters.

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微梦增强表单验证

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A rule engine validator and executor for Swapbot

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Flexible and developer-friendly solution for creating, managing, and validating discount rules in PHP application

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an asynchronous job engine and an url validator

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The Validator component provides tools to validate values.

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