Libraries tagged by validation errors

A lightweight structural gate for PHP payloads. Validates the shape before business logic validates the content.

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Fluent data schema validator with nested objects, arrays, and dot-notation errors

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A comprehensive PHP validation library with support for 50+ validation rules, custom rules, profiles, and multi-language error messages

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PHP client for MisarMail's transactional and marketing email API: send mail, run campaigns and A/B tests, manage contacts, segments, templates and automations, verify domains and DMARC, validate addresses, track revenue and read analytics — 33 resource groups, retries, typed plan-limit errors, SSE streaming.

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A package with some simple helpers for laravel and bootstrap

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A lightweight PHP 8.5+ library to process form submissions, validate fields, and send structured email notifications with configurable templates and error codes.

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Powerful and flexible PHP data validator with customizable rules, error messages, and callback functions

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Validate Excel uploads row-by-row. Returns a ValidationResult with per-cell errors, red-highlighted annotated file, hover comments, and a summary sheet.

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A PHP library for integrating with the Google Geocoding API in WordPress, providing address to coordinate conversion and structured address information. Features WordPress transient caching and WP_Error support.

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When ZendSession validation fails, the session is simply cleared. When you'd rather avoid nasty blocking errors.

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A PHP tool that automatically generates PHP FFI wrapper classes from C projects using klitsche/ffigen. Provides object-oriented wrappers with validation, error handling, and comprehensive documentation.

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Convert validation errors from different sources to different formats

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Under certain conditions, when posting data from a form, the web server may lose the post data. This commonly happens if a user is uploading a large file beyond the size limits set in the web server's configuration. Laravel does not handle this situation and may end up throwing a somewhat confusing `TokenMismatchException in VerifyCsrfToken` due to CSRF protection. The 'No Post Data Laravel Middleware' handles situations in which a post request has been submitted and contains no post data - a situation which should not occur under normal usage. By default, the middleware will redirect back to the previous page with an error message flashed to the session. This can then be output on your view as you would normally handle validation errors. If needed, you can also modify this default behaviour and allow any code to run when the 'post request with no post data' situation is encountered.

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Read and write Excel/spreadsheet files (xlsx, xls, ods, csv) with simple array configuration: start row/column, typed columns, defaults, row-level validation errors, styled exports. Built on PhpSpreadsheet.

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