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[discrete]
[[config-hash]]
=== Building the client from a configuration hash

To help ease automated building of the client, all configurations can be 
provided in a setting hash instead of calling the individual methods directly. 
This functionality is exposed through the `ClientBuilder::FromConfig()` static 
method, which accepts an array of configurations and returns a fully built 
client.

Array keys correspond to the method name, for example `retries` key corresponds 
to `setRetries()` method.

[source,php]
----
$params = [
    'hosts' => [
        'localhost:9200'
    ],
    'retries' => 2,
    'handler' => ClientBuilder::singleHandler()
];
$client = ClientBuilder::fromConfig($params);
----


Unknown parameters throw an exception, to help the user find potential problems. 
If this behavior is not desired (for example, you are using the hash for other 
purposes, and may have keys unrelated to the {es} client), you can set 
$quiet = true in fromConfig() to silence the exceptions.

[source,php]
----
$params = [
    'hosts' => [
        'localhost:9200'
    ],
    'retries' => 2,
    'imNotReal' => 5
];

// Set $quiet to true to ignore the unknown `imNotReal` key
$client = ClientBuilder::fromConfig($params, true);
----