(PECL solr >= 0.9.2) Returns an array of all the names of the properties
(PECL solr >= 0.9.2) Unsets the value for the property
(PECL solr >= 0.9.2) Used to retrieve a property
(PECL solr >= 0.9.2) Sets the value for a property
(PECL solr >= 0.9.2) Checks if the property exists
(PECL solr >= 0.9.2) Destructor public void
(PECL solr >= 0.9.2) Creates Solr object public