Graylog2/gelf-php — pull request #15 by gh0zt (2012-07-29 15:49:45+00:00)
Title: Added log level constants

Change-Id: I404c2d28434a0f06db0a8cee97dfc9128dd3cd71

Added log level constants for GELFMessages which make the usage more readable

```php
setLevel(GELFMessage::CRITICAL)
```
instead of
```php
setLevel(2)
```