# Page Not Found

The URL `pure-php/the-hard-way` does not exist.

You might be looking for one of these pages:
- [Advanced Behaviours](https://webauthn-doc.spomky-labs.com/pure-php/advanced-behaviours.md)
- [Input Validation](https://webauthn-doc.spomky-labs.com/pure-php/input-validation.md)
- [Register Authenticators](https://webauthn-doc.spomky-labs.com/pure-php/authenticator-registration.md)
- [Authenticate Your Users](https://webauthn-doc.spomky-labs.com/pure-php/authenticate-your-users.md)
- [Webauthn Server](https://webauthn-doc.spomky-labs.com/pure-php/webauthn-server.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://webauthn-doc.spomky-labs.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://webauthn-doc.spomky-labs.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/pure-php/advanced-behaviours.md`)
- Use `Accept: text/markdown` header for content negotiation