Setup Airbrake for your PHP application

### Installation

Install Airbrake using Composer by running the following command from your project's directory:

```bash
composer require airbrake/phpbrake
```

### Example Usage

Copy the following configuration snippet into your PHP app. It shows how to initialize Airbrake and register the instance as an error handler:

(You can find your project ID and API KEY with your [project's settings](https://airbrake.io/projects/226833/edit)):

```php
$notifier = new Airbrake\Notifier(array(
'projectId' => ,
'projectKey' => ''
));

Airbrake\Instance::set($notifier);

$handler = new Airbrake\ErrorHandler($notifier);
$handler->register();
```

To send a test error, you can call Airbrake directly like in this try/catch example:

```php
try {
throw new Exception('hello from phpbrake');
} catch(Exception $e) {
Airbrake\Instance::notify($e);
}
```

### Framework integrations
- Symfony integration
- Monolog integration
- CakePHP 3.x integration
- Zend integration

### Going further
Check out our official GitHub repo for info on additional features like:
- Adding custom data to your errors
- Filtering specific errors
- Extra config options

The issue names no repository files, tests, or entry points; start by locating the PHP application entry point and its dependency configuration. Compare the requested Composer installation and Airbrake error-handler example with the project structure, then verify that errors can be reported without exposing credentials.

Written by the indexing model from the issue text.