How to use PHP and Xunsearch to highlight and summarize search results

How to use PHP and Xunsearch to highlight and summarize search results

Introduction
In a website or application, the search function is a very important part. When users enter keywords to search, we hope to display results related to the keywords and highlight the parts of the results that match the keywords. This article will introduce how to use PHP and Xunsearch, an open source full-text search engine library, to realize the highlighting and summary display functions of search results.

Step 1: Install and configure Xunsearch
First, we need to install and configure Xunsearch. You can complete the installation and configuration process by downloading the source code package from the official website, decompressing it, and then running the command ./setup.sh. After the installation is complete, we can implement the full-text search function through the API interface provided by Xunsearch.

Step 2: Build search logic
In the code, we need to build search logic to implement the search function. First, we need to introduce the Xunsearch library file, then initialize the search object, and set the search fields and conditions.

<?php
require_once 'path/to/xunsearch/sdk/php/lib/XS.php';

// 初始化搜索对象
$xs = new XS('demo'); // demo为Xunsearch项目的名称，可以根据实际情况修改
$search = $xs->search;

// 设置搜索的字段
$search->setFields('title, content');

// 设置搜索的条件
$keyword = $_GET['keyword']; // 通过GET方式获取搜索关键词
$search->setQuery($keyword);

Step 3: Perform search
After completing the construction of the search logic, we can perform the search operation and obtain the search results. Search by calling the $search->search() method and save the results in a variable.

<?php
// 执行搜索操作
$search->search();

// 获取搜索结果
$docList = $search->getResultSet();

Step 4: Highlighting and summary display
After obtaining the search results, we need to highlight and summarize the results. By calling the highlight() and getExcerpt() methods provided by Xunsearch, the results can be highlighted and summarized.

<?php
// 遍历搜索结果
foreach ($docList as $doc) {
    // 获取高亮显示的标题
    $highlightTitle = $search->highlight($doc->title);

    // 获取摘要
    $excerpt = $search->getExcerpt($doc->content);

    // 输出搜索结果
    echo '<h3>'.$highlightTitle.'</h3>';
    echo '<p>'.$excerpt.'</p>';
}

Code explanation

• First, we highlight the title of the search results through the $search->highlight() method, and Saved in the $highlightTitle variable.
• Then, use the $search->getExcerpt() method to abstract the content of the search results, and save the results in the $excerpt variable.
• Finally, we output the highlighted title and summary content to the page, and the highlighting effect can be achieved through HTML tags and styles.

Summary
Highlighting and summarizing search results using PHP and Xunsearch is very simple. By building search logic, performing search operations, and highlighting and summarizing search results, we can implement a fully functional search functionality. At the same time, Xunsearch also provides some other powerful functions and interfaces, which can expand and optimize search functions according to actual needs. I hope this article was helpful and I wish you success in your development process!

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