How to use PHP and Xunsearch for automatic updating and synchronization of search results

How to use PHP and Xunsearch to automatically update and synchronize search results

Introduction:
With the development of the Internet, search engines play an increasingly important role in our daily lives. For a search engine, the accuracy and real-time nature of search results is one of the key factors. This article will introduce how to use PHP and Xunsearch to automatically update and synchronize search results to improve the user experience of search engines.

1. Preparation

1. Installing Xunsearch
   Xunsearch is an open source full-text search engine that supports multiple programming languages ​​and platforms. Before starting, you need to install Xunsearch on the server and configure the relevant environment.
2. Install PHP extension
   Xunsearch provides PHP extension, which can easily interact with Xunsearch. Use the following command to install the PHP extension:

$ pecl install xunsearch

2. Index update
In search engines, indexes are an important part of saving and organizing data. In order to ensure the accuracy and real-time nature of search results, the index needs to be updated regularly.

1. Create index object
   First, we need to create an index object to index data.

require_once 'XS.php';
$xs = new XS('demo'); // demo为索引的名称，可以根据实际需求进行命名
$index = $xs->index;

2. Add documents
   Use the add method to add documents to the index.

$doc = new XSDocument();
$doc->setFields(array(
    'id' => 1,
    'title' => 'PHP搜索引擎',
    'content' => 'PHP和Xunsearch是一对强力组合'
));
$index->add($doc);

3. Update index
   When you need to update the index, you can use the update method. This method will first delete the original document and then add the new document.

$doc = new XSDocument();
$doc->setFields(array(
    'id' => 1,
    'title' => 'PHP搜索引擎',
    'content' => 'PHP和Xunsearch是一对强力组合，能够提升搜索效果'
));
$index->update($doc);

4. Delete index
   Use the del method to delete documents in the index.

$index->del(1);

3. Index synchronization
In addition to regularly updating the index, it is also necessary to ensure the synchronization of index data on different servers. Xunsearch provides a Replication mechanism to achieve index synchronization.

1. Configure the main server
   First, you need to configure it on the main server.

$xs = new XS('demo');
$index = $xs->index;
$index->setScheme(1, 'id'); // 设置主服务器
$index->setServer('主服务器地址:主服务器端口号', $index::SERVER_MASTER);

2. Configuring the slave server
   Then, configure on the slave server.

$xs = new XS('demo');
$index = $xs->index;
$index->setScheme(1, 'id'); // 设置主服务器
$index->setServer('主服务器地址:主服务器端口号', $index::SERVER_SLAVE);

3. Synchronization index
   By calling the sync method, the index on the master server can be synchronized to the slave server.

$index->sync();

4. Summary
This article introduces how to use PHP and Xunsearch to automatically update and synchronize search results. Through regular updates to the index and index synchronization between servers, the user experience of the search engine can be improved, making the search results more accurate and real-time.

The above is just an example, and actual application scenarios may be more complex. Using Xunsearch's PHP extension, you can flexibly expand and customize it according to actual needs. I hope this article will be helpful to you when building a search engine using PHP and Xunsearch.

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