A PHP library for indexing and searching documents within an Apache Solr installation. Supports both Solr 3 and 4. — Fork of the solr-php-client project on Google Code.
A simple PHP client for Apache Solr that is built on top of Guzzle and inspired by RSolr.
YiiSolr is a very simple wrapper to the PHP Apache Solr Extension (http://php.net/manual/en/book.solr.php) that allows you to communicate effectively with the Apache Solr server in PHP 5 in your Yii Applications.
Solr-Integration into Symfony and Doctrine2
PHP Apache Solr Adapter (Solr PHP Client)
PHP Solr client library
solarium extension to connect to SolrCloud via Zookeeper