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Installing Apache Solr

Published 9 June, 2023
– Last updated 9 June, 2023

Table of Contents


Apache Solr is an open-source search platform that allows you to create powerful search features for your web applications. It is built on top of the Apache Lucene project and provides advanced search capabilities such as full-text search, hit highlighting, and faceted search. In this tutorial, we will guide you through the process of installing Apache Solr on your system.

Installation of Apache Solr

1. Download and install Java on your system if it is not already installed. Set up JAVA_HOME and PATH variables in your system.

2. Go to the Apache Solr download page and download the latest version of Apache Solr.

3. Extract the contents of the downloaded file into a directory on your system.

4. Start the Apache Solr server by running the following command in terminal:

cd /path/to/solr/dir
bin/solr start

5. Open a web browser and go to https://localhost:8983/solr to verify that the server is running. You should see the Apache Solr Admin Console.

Indexing Data

1. Create a new core: In the Solr Admin Console, click on “Core Admin” and then “Add Core”. Follow the prompts to create a new core.

2. Index data using the Solr API or by sending documents to the Solr server via HTTP POST requests. Check the Apache Solr documentation for more information on indexing data.

Searching Data using the PHP Client

1. Install the Solr PHP client library by running the following command in terminal:

composer require solarium/solarium

2. In your PHP code, instantiate a new Solarium client and set up a new query object.

$client = new \Solarium\Client($config);
$query = $client->createSelect();

3. Set up the query parameters and execute the search query.

// Search for a term

// Set the number of results per page

// Set the start position for the search results

// Add facet search criteria
$facetSet = $query->getFacetSet();

// Execute the search query
$resultset = $client->select($query);

// Display the search results
foreach ($resultset as $document) {
    echo $document->title;

Embedding Solr Search in HTML

1. Create a HTML form for the search input and submit button.

<form action="search.php" method="post"><input name="query" type="text" />
<input type="submit" value="Search" /></form>

2. In the search.php file, instantiate a new Solarium client and set up a new query object. Set the query parameter from the posted form data.

$client = new \Solarium\Client($config);
$query = $client->createSelect();
$resultset = $client->execute($query);

// Display the search results
foreach ($resultset as $document) {
    echo $document->title;

How WPSOLR can help

WPSOLR is a powerful WordPress plugin that integrates with Apache Solr to provide advanced search capabilities for WordPress websites. WPSOLR helps you to set up, configure and optimize Apache Solr search for your WordPress website. It also provides additional features such as faceted search, search filters, and custom search forms. With WPSOLR, you can enhance the search experience for your website visitors and improve the overall usability of your website.


Installing Apache Solr and integrating it with your PHP web application can provide you with powerful search functionality. With Solr’s advanced search capabilities, you can quickly and easily search through large amounts of data and present results to your users in a clear and concise manner. By using a PHP client library, you can easily integrate Apache Solr search into your web application. With the help of WPSOLR, you can further extend the search functionality of your WordPress website and provide your visitors with an even better search experience.

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