---
title: "ValidationDriver – API-Referenz · Quittio"
description: "A validation driver checks one or more levels (PHP rules, XSD, KoSIT, veraPDF, …)."
canonical_url: "https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationDriver"
locale: de
meta:
  "og:description": "A validation driver checks one or more levels (PHP rules, XSD, KoSIT, veraPDF, …)."
  "og:image": "https://quittio.dev/og/quittio-de.jpg"
  "og:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
  "og:image:height": "630"
  "og:image:type": image/jpeg
  "og:image:width": "1200"
  "og:title": "ValidationDriver – API-Referenz · Quittio"
  "twitter:image": "https://quittio.dev/og/quittio-de.jpg"
  "twitter:image:alt": "Quittio: E-Rechnungen für PHP und Laravel. Rechtssicher, validiert, archiviert, mit geprüfter Beispielrechnung."
---

> Index of every page on this site: [llms.txt](https://quittio.dev/llms.txt)

[API reference](https://quittio.dev/docs/api) / [Quittio](https://quittio.dev/docs/api/Quittio) \\ [Core](https://quittio.dev/docs/api/Quittio/Core) \\ [Validation](https://quittio.dev/docs/api/Quittio/Core/Validation)

# ValidationDriver

interface in quittio/core

`Quittio\Core\Validation\ValidationDriver` · [Source](https://github.com/Quittio/quittio/blob/v0.7.1/packages/core/src/Validation/ValidationDriver.php#L10)

A validation driver checks one or more levels (PHP rules, XSD, KoSIT, veraPDF, …).

## Methods \#

| Method | Description |
| --- | --- |
| `->levels()` | |
| `->name()` | |
| `->supports()` | Whether the driver can run for the subject (e.g. XML drivers need generated XML). |
| `->validate()` | |

### `levels()`#

```
public function levels(): list<ValidationLevel>
```

<dl><dt>Returns</dt>
<dd><code>list&lt;<a href="https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationLevel">ValidationLevel</a>&gt;</code></dd>
</dl>

### `name()`#

```
public function name(): string
```

<dl><dt>Returns</dt>
<dd><code>string</code></dd>
</dl>

### `supports()`#

```
public function supports(ValidationSubject $subject): bool
```

Whether the driver can run for the subject (e.g. XML drivers need generated XML).

| Parameter | Type | Description |
| --- | --- | --- |
| `$subject` | `[ValidationSubject](https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationSubject)` | |

<dl><dt>Returns</dt>
<dd><code>bool</code></dd>
</dl>

### `validate()`#

```
public function validate(ValidationSubject $subject): ValidationResult
```

| Parameter | Type | Description |
| --- | --- | --- |
| `$subject` | `[ValidationSubject](https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationSubject)` | |

<dl><dt>Returns</dt>
<dd><code><a href="https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationResult">ValidationResult</a></code></dd>
</dl>

```json
{"@context":"https://schema.org","@graph":[{"@id":"https://quittio.dev/#website","@type":"WebSite","description":"E-Rechnungen für PHP und Laravel: ZUGFeRD, XRechnung und Peppol erstellen, prüfen, lesen und archivieren.","inLanguage":"de-DE","name":"Quittio","url":"https://quittio.dev/","publisher":{"@id":"https://quittio.dev/#identity"},"workTranslation":{"@id":"https://quittio.dev/en#website"}},{"@id":"https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationDriver#webpage","@type":"WebPage","description":"A validation driver checks one or more levels (PHP rules, XSD, KoSIT, veraPDF, …).","name":"ValidationDriver – API-Referenz","url":"https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationDriver","isPartOf":{"@id":"https://quittio.dev/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://quittio.dev/docs/api/Quittio/Core/Validation/ValidationDriver"]}],"primaryImageOfPage":{"@id":"https://quittio.dev/#logo"}},{"@id":"https://quittio.dev/#identity","@type":"Organization","description":"Open-Source-Bibliothek für E-Rechnungen in PHP und Laravel (ZUGFeRD, XRechnung, Peppol) und Quittio Managed.","email":"kontakt@niklasforst.de","legalName":"Niklas Forst – Softwareentwicklung","name":"Quittio","url":"https://quittio.dev","founder":{"@type":"Person","name":"Niklas Forst","url":"https://quittio.dev/ueber"},"logo":{"@id":"https://quittio.dev/#logo"},"sameAs":["https://github.com/Quittio/quittio","https://packagist.org/packages/quittio/quittio"]},{"@id":"https://quittio.dev/#logo","@type":"ImageObject","caption":"Quittio","contentUrl":"https://quittio.dev/logo.png","inLanguage":"de-DE","url":"https://quittio.dev/logo.png"}]}
```