In elasticsearch-php, almost everything is configured by associative arrays. The REST endpoint, document and optional parameters - everything is an associative array.

To index a document, we simply specify a body that contains the document that we wish to index. Each field in the document is represented by a different key/value pair in the associative array.

The index, type and ID are also specified in the parameters assoc. array:

$params = array();
$params['body']  = array('testField' => 'abc');
$params['index'] = 'my_index';
$params['type']  = 'my_type';
$params['id']    = 'my_id';
$ret = $client->index($params);