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Use PHP and Xunsearch to implement full-site search function and improve user experience

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Jul 29, 2023 pm 09:37 PM

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Use PHP and Xunsearch to implement full-site search function and improve user experience

With the rapid development of the Internet, the content of websites is becoming more and more abundant, and users need to find the required information more quickly and accurately. Therefore, Implementing an efficient site-wide search function has become particularly important. As a commonly used server-side programming language, PHP, combined with Xunsearch, an open source Chinese full-text search engine, can easily implement full-site search functions and improve user experience.

1. Introduction to Xunsearch

Xunsearch is a high-performance, powerful, open source and free full-text search engine that supports Chinese word segmentation, synonym search, multi-field keyword matching and other features. It is suitable for Full-text search needs in various websites and applications.

2. Xunsearch installation and configuration

First, we need to download and install Xunsearch from the Xunsearch official website (https://www.xunsearch.com/). The installation process is relatively simple and will not be described in detail here.

After the installation is completed, we need to perform relevant configurations. Enter the sdk/php/app folder in the installation directory, find the Main.php file, and modify the following parameters:

$server = 'localhost'; // Xunsearch安装的服务器地址
$port = 8383; // Xunsearch服务端口，默认为8383
$index_name = 'your_index_name'; // 索引名，自定义

At this point, the installation and configuration of Xunsearch is complete finished.

3. Create a full-text index

Before we start to implement the full-site search function, we need to create a full-text index first. In the Xunsearch installation directory, there is a indexer.php file, which we can use to create an index.

First, use the following command to generate the required configuration file for indexer.php:

php api/cli/phpcmd.php indexer --config-charset=utf8 --ini > api/cli/phpcmd.ini

Then, open the phpcmd.ini file and modify the following Parameters:

[xs1]
project.name = your_project_name # 搜索项目名，自定义
#index = filenames # 需要被搜索的MySQL数据库表名，格式为："数据库名.表名"的形式，多个表用逗号分隔
#index = table1,table2
charset = utf8 # 数据库连接使用的字符编码

After the configuration is completed, we can use the following command to establish a full-text index:

php api/cli/phpcmd.php indexer --all

This command will add all content to the index. If new content is added to the database, it will also This command needs to be run periodically to update the index.

4. Implement the full-site search function

We have installed, configured and created the full-text index. Next, we start writing PHP code to implement the full-site search function.

First, we need a search page where users can enter keywords to search. The following is a simple search page example:

<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>全站搜索</title>
    <style>
        form {
            text-align: center;
            margin-top: 50px;
        }
        input[type=text] {
            padding: 6px;
            font-size: 16px;
        }
        input[type=submit] {
            padding: 6px 20px;
            font-size: 16px;
            background-color: #2980b9;
            color: #fff;
            border: none;
            cursor: pointer;
        }
    </style>
</head>
<body>
    <form action="search.php" method="GET">
        <input type="text" name="keyword" placeholder="请输入关键词">
        <input type="submit" value="搜索">
    </form>
</body>
</html>

The search page code is very simple. It is mainly a form. After the user enters the keyword, he clicks the "Search" button to perform the search operation.

Next, we need to create the search.php file to process search requests and return search results. The following is a code example for the search.php file:

<?php
require_once 'sdk/php/app/Main.php';

$xs = new XS($index_name); // 创建Xunsearch对象

$keyword = $_GET['keyword']; // 获取关键词

$search = $xs->search; // 获取Xunsearch搜索对象
$search->setQuery($keyword); // 设置搜索关键词
$search->setCharset('UTF-8'); // 设置字符编码

$result = $search->search(); // 执行搜索

foreach ($result as $doc) { // 遍历搜索结果
    echo '<h3 id="doc-title">' . $doc->title . '</h3>';
    echo '<p>' . $doc->content . '</p>';
    echo '<hr>';
}

The above code first introduces the Main.php file and creates a Xunsearch object. Then, obtain the keywords entered by the user and search using the Xunsearch search object. Finally, the search results are iterated over and displayed on the page.

5. Summary

By using PHP and Xunsearch, we have implemented a simple full-site search function. Users can find the information they need quickly and accurately, which provides great convenience for the user experience of the website.

Of course, Xunsearch has many other features, such as supporting Boolean search, Pinyin search, etc. If you have more advanced search requirements, you can further explore the usage of Xunsearch.

The implementation of the whole-site search function can not only improve the user experience, but also improve the SEO effect of the website and inject new vitality into the development of the website. I hope this article can be helpful to everyone, thank you for reading!

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