(PECL solr >= 2.0.0)
SolrClient::system — Retrieve Solr Server information
Bu işlevin bağımsız değişkeni yoktur.
Returns a SolrGenericResponse object on success.
Emits SolrClientException if the client failed, or there was a connection issue.
Emits SolrServerException if the Solr Server failed to satisfy the query.