> ## Documentation Index
> Fetch the complete documentation index at: https://docs.qlty.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# PHP Language Support

## Summary

<table className="pretty-table">
  <thead>
    <tr>
      <th style={{ width: "35%" }}>Feature</th>
      <th style={{ width: "20%" }}>Status</th>
      <th style={{ width: "45%" }}>Notes</th>
    </tr>
  </thead>

  <tbody>
    <tr>
      <td>[Maintainability](/cloud/maintainability/metrics)</td>
      <td>✔</td>
      <td>Complexity, duplication, code smells</td>
    </tr>

    <tr>
      <td>[Linting](/linting)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Auto-formatting](/auto-formatting)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Custom checks](/custom-checks)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Security scanning](/cloud/security/framework)</td>
      <td>✔</td>
      <td>AppSec, dependencies, and secrets</td>
    </tr>

    <tr>
      <td>[Code metrics](/cloud/maintainability/metrics)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Code coverage](/coverage)</td>
      <td>✔</td>

      <td />
    </tr>
  </tbody>
</table>

## Details

<table className="pretty-table">
  <tbody>
    <tr className="divider-row">
      <td style={{ width: "35%" }}>Maintainability</td>

      <td style={{ width: "20%" }} />

      <td style={{ width: "45%" }} />
    </tr>

    <tr>
      <td>[Complexity](/complexity)</td>
      <td>✔</td>
      <td>Aka cognitive complexity</td>
    </tr>

    <tr>
      <td>[Cyclomatic complexity](/complexity#difference-from-cyclomatic-complexity)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Identical code duplication](/duplication)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Similar code duplication](/duplication)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Code smells](/code-smells)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr className="divider-row">
      <td>Linters</td>

      <td />

      <td />
    </tr>

    <tr>
      <td>[PHP\_CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[PHPStan](https://phpstan.org/)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[radarlint-php](https://github.com/qltysh/radarlint)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr className="divider-row">
      <td>Auto-formatters</td>

      <td />

      <td />
    </tr>

    <tr>
      <td>[php-cs-fixer](https://cs.symfony.com/)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr className="divider-row">
      <td>Custom checks</td>

      <td />

      <td />
    </tr>

    <tr>
      <td>[ast-grep](https://github.com/ast-grep/ast-grep)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[Semgrep](https://semgrep.dev)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>[ripgrep](https://github.com/BurntSushi/ripgrep)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr className="divider-row">
      <td>Security scanning</td>

      <td />

      <td />
    </tr>

    <tr>
      <td>[Gitleaks](https://gitleaks.io/)</td>
      <td>✔</td>
      <td>Secrets scanning</td>
    </tr>

    <tr>
      <td>[OSV-Scanner](https://google.github.io/osv-scanner/)</td>
      <td>✔</td>
      <td>Dependency scanning (SCA)</td>
    </tr>

    <tr>
      <td>[radarlint-php](https://github.com/qltysh/radarlint)</td>
      <td>✔</td>
      <td>AppSec (SAST)</td>
    </tr>

    <tr>
      <td>[Semgrep](https://semgrep.dev)</td>
      <td>✔</td>
      <td>AppSec (SAST)</td>
    </tr>

    <tr>
      <td>[Trivy](https://trivy.dev)</td>
      <td>✔</td>
      <td>Dependency scanning (SCA)</td>
    </tr>

    <tr>
      <td>[TruffleHog](https://trufflesecurity.com/trufflehog)</td>
      <td>✔</td>
      <td>Secrets scanning</td>
    </tr>

    <tr className="divider-row">
      <td>Code coverage</td>

      <td />

      <td />
    </tr>

    <tr>
      <td>[PHPUnit](https://phpunit.de/)</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>Clover coverage format</td>
      <td>✔</td>

      <td />
    </tr>

    <tr>
      <td>Cobertura coverage format</td>
      <td>✔</td>

      <td />
    </tr>
  </tbody>
</table>

## File extensions

By default, PHP files are defined as:

```
[file_types.php]
globs = [
  "*.php",
  "*.ctp",
  "*.fcgi",
  "*.inc",
  "*.php3",
  "*.php4",
  "*.php5",
  "*.phps",
  "*.phpt",
  "*.phtml",
  "**/.php_cs",
  "**/.php_cs.dist",
  "**/Phakefile",
]
```

These patterns can be overridden from `qlty.toml`.

## Supported PHP versions

We officially support PHP version 5 and later for maintainability checks and code coverage. Each plugin may have its own version requirements.