The Solr extension allows you to communicate effectively with the Apache Solr server in PHP 5.
The Solr extension is an extremely fast, light-weight, feature-rich library that allows PHP developers to communicate effectively with Solr server instances.
It is compatible with both versions 1.3 and 1.4 of Apache Solr.
There are built-in tools to add documents and make updates to the solr server.
It also contains tools that allows you to build advanced queries to the server when searching for documents.