Book Image

Apache Solr PHP Integration

By : Jayant Kumar
Book Image

Apache Solr PHP Integration

By: Jayant Kumar

Overview of this book

The Search tool is a very powerful for any website. No matter what type of website, the search tool helps visitors find what they are looking for using key words and narrow down the results using facets. Solr is the popular, blazing fast, open source enterprise search platform from the Apache Lucene project. It is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest websites.This book is a practical, hands-on, end-to-end guide that provides you with all the tools required to build a fully-featured search application using Apache Solr and PHP. The book contains practical examples and step-by-step instructions.Starting off with the basics of installing Apache Solr and integrating it with Php, the book then proceeds to explore the features provided by Solr to improve searches using Php. You will learn how to build and maintain a Solr index using Php, discover the query modes available with Solr, and how to use them to tune the Solr queries to retrieve relevant results. You will look at how to build and use facets in your search, how to tune and use fast result highlighting, and how to build a spell check and auto complete feature using Solr. You will finish by learning some of the advanced concepts required to runa large-scale enterprise level search infrastructure.
Table of Contents (15 chapters)
Apache Solr PHP Integration
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Solarium adapters


What about systems that do not have cURL installed? Solarium comes with a concept of adapters. Adapters define the way in which PHP will communicate with the Solr server. The default adapter is cURL, which we used earlier. But in the absence of cURL, the adapter can be switched to HTTP. CurlAdapter is dependent on the curl utility, which needs to be installed or enabled separately. HttpAdapter on the other hand uses the file_get_contents() PHP function to get a Solr response. This uses more memory and is not recommended when the numbers of queries on Solr are very large. Let us see the code to switch adapter in Solarium:

$client->setAdapter('Solarium\Core\Client\Adapter\Http');
var_dump($client->getAdapter());

We can call getAdapter() to check the current adapter. There are other adapters available—the ZendHttp adapter that is used with Zend Framework. There is a PeclHttp adapter, which uses the pecl_http package to make HTTP calls to Solr. The HTTP, Curl, and Pecl adapter support authentication, which can be used by the setAuthentication() function discussed earlier. CurlAdapter also supports the usage proxy. You can also create a custom adapter using the adapter interface if required.