DebugBar supports storing collected data for later analysis. You'll need to set a storage handler using setStorage() on your DebugBar instance.

$debugbar->setStorage(new DebugBar\Storage\FileStorage('/path/to/dir'));

Each time DebugBar::collect() is called, the data will be persisted.

It will collect data as json files under the specified directory (which has to be writable).

$storage = new DebugBar\Storage\FileStorage($directory);

Stores data inside a Redis hash. Uses Predis.

$storage = new DebugBar\Storage\RedisStorage($client);

Stores data inside a database.

$storage = new DebugBar\Storage\PdoStorage($pdo);

The table name can be changed using the second argument and sql queries can be changed using setSqlQueries().

You can easily create your own storage handler by implementing the DebugBar\Storage\StorageInterface.

For each request, the debug bar will generate a unique id under which to store the collected data. This is perform using a DebugBar\RequestIdGeneratorInterface object.

If none are defined, the debug bar will automatically use DebugBar\RequestIdGenerator which uses the $_SERVER array to generate the id.