> For the complete documentation index, see [llms.txt](https://senselab.gitbook.io/senselab-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://senselab.gitbook.io/senselab-docs/vendor/symfony/error-handler.md).

# ErrorHandler Component

The ErrorHandler component provides tools to manage errors and ease debugging PHP code.

## Getting Started

```bash
composer require symfony/error-handler
```

```php
use Symfony\Component\ErrorHandler\Debug;
use Symfony\Component\ErrorHandler\ErrorHandler;
use Symfony\Component\ErrorHandler\DebugClassLoader;

Debug::enable();

// or enable only one feature
//ErrorHandler::register();
//DebugClassLoader::enable();

// If you want a custom generic template when debug is not enabled
// HtmlErrorRenderer::setTemplate('/path/to/custom/error.html.php');

$data = ErrorHandler::call(static function () use ($filename, $datetimeFormat) {
    // if any code executed inside this anonymous function fails, a PHP exception
    // will be thrown, even if the code uses the '@' PHP silence operator
    $data = json_decode(file_get_contents($filename), true);
    $data['read_at'] = date($datetimeFormat);
    file_put_contents($filename, json_encode($data));

    return $data;
});
```

## Resources

* [Contributing](https://symfony.com/doc/current/contributing/index.html)
* [Report issues](https://github.com/symfony/symfony/issues) and [send Pull Requests](https://github.com/symfony/symfony/pulls) in the [main Symfony repository](https://github.com/symfony/symfony)


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