Libraries tagged by validation errors

Require a minimum and/or maximum character length for specific Gravity Forms fields, displaying an informative Gravity Form validation error to the user for disallowed entries.

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A PHP component/library. Request validation, document views, error objects and containers for JSON:API endpoints.

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Official PHP client (SDK) for the Newsdata.io News API — fetch real-time, historical, crypto, and stock-market news via REST with validation, retries, and error handling.

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JSON and YAML editing for Filament 5: a JsonEditor field with a code view (highlighting, line numbers, folding) and an editable tree view, live validation with the error line, a Format button and optional JSON Schema; a YamlEditor field with live lint; read-only JsonEntry and YamlEntry for infolists with copy; and server-side JsonRule, YamlRule (symfony/yaml) and JsonSchemaRule.

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Send Facebook Messenger and Instagram messages from Laravel — every message type, with pre-flight validation and clear, structured errors.

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Distributed, event-driven, queue-based Excel importer for Laravel with pluggable drivers, validation, transformation, and row-level error recovery.

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Simple wrapper for the illuminate support, http response, request, validation, zttp, cache, encryption, blade templating and whoops error handler for WordPress

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This package is a trait to validate input and return directly error with status code 400 to FormRequest in laravel

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A Symfony bundle to serialize symfony validation form errors or constraint violation lists

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Nexphant Validation - Validator, rules, and error formatting

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Adds custom error messaging for form validation within Contao.

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A simple and lightweight PHP library for handling structured error messages, useful for validation, data processing, and API responses

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Attribute-driven validation with normalization and locale-aware error messages for Switon Framework

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Laravel validation extension for throwing ValidationException on error

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